无忧得胜-网上国际课程 (5edu.win)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别

Switch to Full Screen

习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autodiscover.5edu.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 80，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autodiscover.5edu.win/test80.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 >作者: admin    总分: 142分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月20日 21:29  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of magnetic flux ,u 42uht1p ( pjwcm2whexcept

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states d9u -y0vtmo c)that the $emf$ induced in a loop of wire is proportional to

参考答案:    
标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the number of loops of wire in a coil produces what kind of change on tr 0nl7f.a u9ckh.9 u7lrfn0kc ae induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of thes9py g 2f(pgv8 magnetic field through a loop of wire produces what kind of cha28fpsg9v(gp ynge on the induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the diameter of a loop of wrcoz d6 8x2(rxire produces what kind of change on the indu6xz(rx2 doc 8rced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a coil is removed from a ma2 0yd+vivc9xe.2mfz 34 tts.irmv7ab y f,j .dgnetic field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  According to Lenz's law, the direction of an induced current in a conductor wl ;ykotpl1 ;jwiki t)2 5i4vp3;z3udv/pz p) bill be tha2opyji;zvt3pk p ipki5t 4bu;d/l3)z w;lv1)t which tends to produce which of the following effects?

参考答案:    
标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a ho*pc-n y x 68ec-a4qahzrizontal table. A bar magnet is held above its center with its north pole p-4q6e n pyzachax-8 *cointing down. The stationary magnet induces (when viewed from above)

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. ) 9i 9zkrqot5s1tvv9jA bar magnet is held above its center with its north polr)i5sv1 9z 9oq k9tvtje pointing down, and released. As it approaches the coil, the falling magnet induces (when viewed from above)

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a table top in a region where the magnetic fieldbcrf p6 l 771v3sbv5ua vector points straight up. The magnetic 6s3r17ubbvlp a7cf 5vfield vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a level table top in a region where the magnetic fdvw g45qnkpq5s;x8r x900qxu, gqx) p ield vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induce 5pqqr0xv8x4,9 )nxugdpxw0 q;5gskqd current in this coil as the field increases?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a horizontal tablg+l 96 eh0qguf4bj)az bz3i*job: 3c le top in a region where the magnetic field points straight down.cul b0ao3i4q l6zeb :hb*jg3jg +z f)9 The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizontalc n9-xgnqg 7l8zk ;5dd table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the kdqg 85nx7-ndgzcl9 ;induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a loop of wire with the north p:zoa fxoa3j bmqe+ /6zn+7;kzole entering first. As the north pole enters the wire, the induced current will be (as viewed fkb+zxe; qaf6j7:3omoz n+/a zrom above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant angular speed ab)vb s3,r+oi vtye58ruhpv47oout an axis whose direction can be variedvooh 87te5rsvri)3+ u,b4 y vp. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be zero?

参考答案:    
标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant angular uku;k, nj:;uwspeed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what mu; kwu,;uuk:n jst be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
标记此题
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.l9wt .2zy7gsj
参考答案:    

标记此题
18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Lenz's law.
参考答案:    

标记此题
19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
List the three ways t, )3t efhecalqsh)k-f a(+ss6a6jq k-hat an $emf$ can be induced in a loop of wire.
参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wire moves across a magnemsjkdi );,)hx tic field. The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-west direction) is moved northward at u46+ yhb: z5:9neopnkz mg 3:azxpkr2constant velocity through a magnetic field that points straigxyea npzm u:h:k o529 b3: r4nzz+gkp6ht down. Make a statement concerning the potential induced across the rod.

参考答案:    
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotatks,o,uui,oa 3 z 8oh3ees at a constant angular velocity $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transfj4qc nnjhdfq x,8/; pted 8ovk5s67(lorms

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator coil rotat 3. yw oxu.v)tiliik owut5:5:es through 60 revolutions each second. The frequency of the:5u.kx t.loiyio)t i5w: uv3w $emf$ is

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device useiu , x67nv)lpad to

参考答案:    
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device3+pn-7ezs t:ykmjk q+ that

参考答案:    
标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the secondary coil contains more loops than the primary 0cqa a5ic-4( y;0e0w(ll)xcnmjfk yz coil thclj-yn(xfelyz m4k0 0ica ) a(c5 0qw;en it is a

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contain,2kvmcs2sqp w*erf 9+8t it:qtz31qws more loops than the secondary coiw+miqr 1 2 ft qesz23*pq:, sttkcw98vl then it is a

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power inbon(hs80 ht bc+ffl76put

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a given LC resonant cirup c,bi;o *2svcuit,

参考答案:    
标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an ideal battery of ciyel bels6qo 4x80zfhs69iqzd4b4 bt, /g,2zonstant terminal voltage. At ti dtgbx2e6,z 98z /sy4f llqiq4ehb46, so 0bzhe moment contact is made with the battery, the voltage across the resistor is

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an ideal rigb ;wjw2j (27ra3a lk7 wkw4battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the induig 7 3jw(2r warw;bkwj72 l4kactor is

参考答案:    
标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resistance R is connecte ebs+zpip)8) sd to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the inductance is 2L. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with ind4,bo,h0jrev6gk l(mt uctance L and resistance R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the resistance is 2R. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to a battery. Th),qmk :moy4 l/6 zhzbme time constant for the circuit repm hm:6zbq,l/ 4zk oy)mresents the time required for the current to reach

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected inlltij f8wbxv, gf4( /n:cw ,/g series to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuit repres bglxnfl iv,8 4f/w(/cgtj,w :ents the time required for the current to decrease to

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have the same units exceptjc -wi6ru n12t:

参考答案:    
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to an AC power supply. On this circuizmf8x * ywsd1:t, the current

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC power supq.7 7 3:aeyili8rouqpply. In this circuit, the currenta 778lep:y.qi rqo iu3

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reactance i1h8ktq kruekb)4e .sr /6j-pkn an ac circuit changes by what factor when the frequency isr1)ukkbqrhje .4 /6k8tkep-s tripled?

参考答案:    
标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of the AC voltage across an inductor is doih+ 7xbl:6g:pqha e+sp /f/joeq h, e3ubled, the inductive reactance of thapbh+e hse/gl i+ h6a:op/,q:q73xefjt inductor

参考答案:    
标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across an inductoxp1jhcze. g wvji; 1 2;e)b8h3 al3f3.xylcvzr approaches zero, the induc.gz.cpax13l8y1x3e cwve j3hzbj ;2f il;)vhtive reactance of that coil

参考答案:    
标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure capacitor is connected to an AC power supply. In this circuit, the 5vzz6dy w906gvnu-m bcurrent 0ng9z bmdz-56wv6yvu

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac circuit changes by what factor when the frequo i (7kt0k4i31 oged5no(rocat(8rrvency igoei5r71 o4(rr v3to80d((na t kikocs tripled?

参考答案:    
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the ACnfc*t21k3( juy eyz7k voltage across a capacitor approaches zero, the capaccj 13*7kyuk(tneyz 2fitive reactance of that capacitor

参考答案:    
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase anj5v *z6r p*3ftg+ jc w5ophn2vgle between the voltages of the inductor and capacitor in a RLC5c*wgt n hv zjfo63+p*v 25jpr series circuit?

参考答案:    
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of an RLC circuit is defined /7/ymao4lyhv/pwh4*hag .urm v-6 o fas $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the ci)(f ko bzf-yg/rcuit increases if R increases. When is this stf g-o()f/byk zatement true?

参考答案:    
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the ci ,t5m ys85ci e,utbsf7p9( cmyrcuit increases if $X_L$ increases. When is this statement true?

参考答案:    
标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series circuit.arobi; ye .kc j5q*z19 The impedance of the circuit increases if $X_C$ increases. When is this statement true?

参考答案:    
标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capaxl+dyuud 7h g w 4jss.n6w/3d+citance both double in an LRC series circuit, the r+47hj dy.dssw/w+ngx uud6 3lesonant frequency of that circuit will

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven by an AC appe fo3tm5b3no7 u8el f:lied voltage. At resonance,

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series RLC )bu dup*9 wpw7circuit occurs when

参考答案:    
标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A flux of $4.0 \times 10^{-5} \; Wb$ is maintained through a coil for 0.50 s. What $emf$ is induced in this coil by this flux?

参考答案:    
标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radi:.t4b pl dhygr-f8 )3edtfg:c us 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when thepg:f ddtr.8etg 4-3) ycb:f hl plane of the loop and the magnetic field vector are parallel.

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform magnet6-up rm8e+8yc i-8vtxg l l)qkic field of 0.20 T. Find the magnetic flu-e q8x k-6p8uyltgir c8mv)l+x through the loop when the plane of the loop and the magnetic field vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius0 prum.8lsn :z,iuag5.t 3c ao 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic fc unlt,.3mzs0pou 8.ig:raa 5lux through the loop when the plane of the loop and the magnetic field vector are at an angle of $30^{\circ}$.

参考答案:    
标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The cross-sectional area of an adjustaypv*ap1r t /8amdgd 496,khkj ble single loop is reduced from $1.0 \; m^{2}$ to $0.50 \; m^{2}$ in 0.10
s. What is the average $emf$ that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

参考答案:    
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil change 7py/s 2mvd8nar*q0)v isw 4fjs from $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wi ob8v4g i5y -z(u d9iiiop/8plre on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the inducu pb54izii- 8d8g oi(9yopl/ved $emf$.

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square coil of wire with 15*74l zznn)n;fadat gjh iu 141 turns and an area of $0.40 \; m^{2}$ is placed parallel to a magnetic field of 0.75 T. The coil is flipped so its plane is perpendicular to the magnetic field in 0.050 s. What is the magnitude of the average induced $emf$?

参考答案:    
标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil of 160 turns and1 9mv c(r:f9 ;nfmblgz area $0.20 \; m^{2}$ is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s. If the resistance of the coil is 16 W, at what rate is power generated in the coil?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a wing span of 60 m flies horizontally at a lj*k, )x+b58 k ti6(yfvk 1llrgkno lb)ocation where the downward component of the Earth's magne,o8 6rkv1ly jg* b +kb5killf)) kn(txtic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates at a v7/.r xe58 ln+wkom.*dmvmniconstant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a constant maxn/ mmki.7rl+v8m on5ew. *v dgnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loops and a cross-sectional j**rct -i)s lparea of $0.25 \; m^{2}$. What is the maximum $emf$ generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consist.,au osj aby4 k :japmklvu.6,+rvisi-g-5j:s of 100 turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular loops on its armature. Each loop is 12 gd/, ps960ec zee ke39:a yovrln: 9wjcm long and 8 cm wide. The armature rotates at 1200 rpm a/v wa ne3,g 0l:99re pdc 9zs6:ejoyekbout an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.30 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator?

参考答案:    
标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists ofnv8 8pxphw ;r7dyrasv,) *he1 100 turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple AC generator with an output o. l(vbvi(9o8nnkv6di f 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the area of the rotating cbnlnv ki.(i6v(d 8v9ooil is $100 \; cm^{2}$, how many turns are needed?

参考答案:    
标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a genavu ;kb*efu*x8gwn,5a2myko3e (l 3 lerator with a maximum $emf$ of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of $0.030 \; m^{2}$, what would be the frequency of the generator in a magnetic field of 0.030 T?

参考答案:    
标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of 6.00 W;g) remtzk+(gc7 7dvk w:8ub y4rh,jk. The motor operates on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance ws 8/exsnl35jluq 4/h of 6.00 W. The motor operates on 120 V AC, and when running at full speed it generates a /ew8j nh/qusxl s 534lback $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal ret44wdsz;bv,yi +tu t:mc/ ee1sistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A. What is the start-up curreb1e,+w tuvc /sez ;yt:44tidmnt?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V powbdxrq z2+g y6h(bw(/ jer supply. The operating currjx(2 b z/(dg+ryhqw b6ent is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V power supply. q5/ * mld ,cannq2*teyThe operating current is 1.0 A at full speed. What is the baa**yn ,qqtn2lcm e/d5ck $emf$ when the motor is running at half speed?

参考答案:    
标记此题
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A step-down transformer is neededq*9d / ss5qpkd to reduce a primary voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causjqghj3*wx +7-gd2wqa es 14 A to flow in the secondary. How many tu+j -jaqghwq2 gd x7w3*rns are in the secondary?

参考答案:    
标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, how many turns are necessary in a 110-V primary ifqlf-1i(/namidyyjf9 w4 *wv5 the 24-V seconda /f 9f4m*vwd wyqy(i -jln1i5ary has 100 turns?

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 500-turn primary coil and a 2000-turn secon4xo0l:iknkn7bg.e 1+ vi b3 cpdary coil. If the current in the secondary is 3.0 A, what is the currenl0xnig3vnb p+ko ic7bk41e. :t in the primary?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary of a transformepqj os)jz ua/e;3/a*j r. Assuming 100% efficiency, he/szjpq/3 * a)j ouaj;ow many amps at 24 V can flow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer prvh: w-pdo- 2xiovides 7500 V at 10.0 mA. The primai-x2h-wdv :p ory coil operates on 120 V. What does the primary draw?

参考答案:    
标记此题
82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and fz sn , /5ug9+pgu0: b2eldvky300 turns on its secondary coil. If 12gv+zku2bune9 ydl0 :gp 5 /sf,0 V at 2.0 A is applied to the primary, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and 300 t ze5y 5*0kzsfx6o8pi qurns on its secondary coil. If efo8yz05x q65* kzspi 120 V at 2.0 A is applied to the primary, what current is present in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and,lhrl91 peh 8:+iismpk ue18l its secondary has 200 turns. If tri 1k,+se hlum p:p18llhei89he input current at the primary is 100 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns. *ctdg 1zc +,iaemb7o,3 fnk ,rIf the7,+gzf mtnia 3,ero bk1dcc,* input voltage to the primary is 100 V, we can expect the output voltage of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transb+bmyd8o u8 )j 5yn2pwformer has 100 turns and its secondary has 200 turns. If the power input to the primary is 100 W, wb8oym +)b2uy5jdp8 n we can expect the power output of the secondary to be (neglecting frictional losses)

参考答案:    
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of +jb4* zt ec xvcl0,ee/current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turns0txe, vcc z 4bje/+le* in the secondary if the primary has 200 turns.

参考答案:    
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually i 32knk:ghsz2rs:iiv*idzar 4;z.)estepped up to 4500 V by a transformer and transmitted through a power line of tot sk2driir): k 2a gz;sv4.zni:* 3ehizal resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltc;lb)7wb d4b aage is usually stepped up to 4500 V by a transformer and transmitted through a powedblb 7)4ba wc;r line of total resistance 1.0 W. Find the percentage power lost in the transmission line if the voltage is not stepped up.

参考答案:    
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long has a total resistance ofum 5jqtwd474 f 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:5 qjf4 4uwm7td1. What percentage of the original energy would be lost if the transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km ke4t4132dd k9w p w/xuem:jiflong has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In oe/44u1wk2k wd 3xe pt idfj9m:rder to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is lost when the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a p ouxu3++ (eyi -c*kyp6-W line at 1000 V. How much less power would be lost if the power were transmitte(k +yxu ppu*eyo-c+i3 d at 3000 V instead of at 1000 V?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The output of a generator is 440 V at 20 A. It is to be transmitted on a chb- 62x:s; (l os5-guvwjokqline with resistance of 0.60 W. Tx-uo-5jsv: wsglqb 6;2khoc(o what voltage must the generator output be stepped up with a transformer if the power loss in transmission is not to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How muykgj p+s w-f,(;/7hidk;urj h ch energy is stored in the coiljy /ujk7;-hpf ,wsk h( rgd;+i's magnetic field?

参考答案:    
标记此题
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains a 6. x* c ho3(znv5u0k2i4cvhg9rk 0-W resistor and an 18-H inductor. What is this circuit'i*4gxnvc2vhcu z( o9h3 k05k rs time constant?

参考答案:    
标记此题
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak voltage in an AC circuit where the rms vk um d i(8lc;ls+jsfrg+c)j:4oltage is 120 V?

参考答案:    
标记此题
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. 2hrhk/0/u bwvu o5xoa2,e-.vd hse0f What is the peak current?

参考答案:    
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. What is * n,zllp6ez 3ithe resistance of the lalzl z,p6ei*n3 mp?

参考答案:    
标记此题
99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V accv8 p7r)grj//ny3dyj power supply. What is the peak curre/)v3gjr 7yj cn /8rpdynt through the resistor?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V ac power supply. What is the power dg al84-pu j(boj) 0 mxx0lnyt5issipated in the (- mu0a5xxj jnt)llbg048 poyresistor?

参考答案:    
标记此题
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resistor br0k9b 9za2kb7jip w -is $I = 0.80 \sin (240 t)$. What is the rms current?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W r03)nqr -s+ fp,o mergsesistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a c u6rdn k5n4;gfyi;v;+hkjj 250-W resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
标记此题
104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the reactance of a 1.0-mH inductofy;5m/ -c)szsjgt 2ad0pqxn *r at 60 Hz?

参考答案:    
标记此题
105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the inductive reactance of a 2.50-mH coil at t bf0cw570ldgry.yc6 1000 Hz?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH coil have 14.0 W of invh9j z/92noa rductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary for 157 W of inductive reactan0wdv nn,q r)j3vnct /:ce at 1000 Hz?

参考答案:    
标记此题
108#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in a 60-mH inductor when 120 v a ;3stiuo **+r(uxun8s hc:mV AC at a frequency of 20 kHz is x+c*;tnsh(:m3*v s8oaru u i uapplied to it?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 2.50-mH coil due to a 110-V, 60.0 Hz uglb(lpfsr ;) :g7e6ns1tz2qsource?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactance of a 4.7-mF capacitor at 1p8j,r f nhqxr tr;n0750 kHz?

参考答案:    
标记此题
111#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor is needed to have 50 qc tu2 ho12tn:0umwn )W of capacitive reactance at 10 kHz?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitor h-io7 jzv 9;rfn:98e6phuhl a jave a reactance of 1200 W?

参考答案:    
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will the capacitive reactance of a 0.010 ef (bq+8)p4i pccvm:r-mF capacitor be 100 Wc( )bv f4c pqrm8eip:+?

参考答案:    
标记此题
114#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 0.0010-mF scmu7vda9rei;,hd, ) capacitor at 1000 Hz and 5.0 V?

参考答案:    
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac(fligox y1s;kug kfz()uy:3/ series circuit with 12.0 W resistance, 15.0 W inductive reactance,1s( f)/kf xuy:yku(li3gg ;z o and 10.0 W capacitive reactance?

参考答案:    
标记此题
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance at 1500 Hz if a 100-W resistor, 20-mH coil/z4ko n8p f1b 2;nm5 dn2bxshu, and 1.0-mF capacitor are connected in series/ n2s8zbbf4nnm1hpd x2u; o5k?

参考答案:    
标记此题
117#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle at 1500 H+ j.tatawtjt+j(p4n 9+;5 cz(ce qq kbz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor j +4qqbt+n.tt 9j5a(tcj( cw;+ekazpare connected in series?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
118#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistoreb5 sq /*b(daj9vx 3c-x f)tzq is connected in series with a 20-mH inductor, what is the imsx/xc3q5qe)a bft-bvj ( 9dz*pedance at 1000 Hz?

参考答案:    
标记此题
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is k)h)*mv q3dlgc v4*avl/4a 8lmyi t2 yconnected in series with a 20-mH inductor, what is the phase angle at 1000 a /yvthl4vd)gylm ) cmv*423ia qkl*8 Hz?

参考答案:    
标记此题
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is nn8 k3;,r tbd*ld n6j4oiut hw:eeded in a series circuit with a 20-mH coil and 1.0-mF capacitor for a total impedance of 100 W at 1bj3ti*l,:onnu wh4rd 8d6k ;t 500 Hz?

参考答案:    
标记此题
121#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following e7bfoi):tf lu -iz/f a5h3,cucapacitances is needed in series with a 100-W resistor and 15-mH coil zfotc7- , u3)ah5u fl/ :iifbeto get a total impedance of 110 W at 2000 Hz?

参考答案:    
标记此题
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put in series withd7hmr (05qlrhk t74le 5q .ggh a 450-mH inductor at 5000 Hz for a total impedanc4 .dqhm l5hr kgg7e0r(57l hqte of 40000 W?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW resistor at 1.0-MHz for a t.l mm/zhce ,tx 9(ob7wotal impedance of 150em h,.7otl/w 9zbc x(m kW?

参考答案:    
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected in series with a w;k:-4fnl3m 4 b szq/;7i ep:u(esmr gr.rxxb 20-mF capacitor. What is the impeda wm rpl( s ;;- 7xer e:4rkmxgiqnsf:3buz/4b.nce at 1000 Hz?

参考答案:    
标记此题
125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needsn )f881ip /zjdkhvf :(lso9red in series with a 10-mF capacitor at 1.0 kHz for a total impedance o jsohrz n9fp s1(idf8)l/8kv:f 45 W?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF c9 rl c:y7noqo2hjl)eroc89n6qr yd34 apacitor at 1.0 kHz for a phasq qlrroyj dy 6:e7cn8 noc39294l)rohe angle of $40^{\circ}$?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed iw7(dq3ne.o tnn series with a 30-W resistor at 1.0 kHz for a total impen (wo7.3 qendtdance of 45 W?

参考答案:    
标记此题
128#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is inzh8zp1.h2ygcl kw1aq r 4s7p/ series with a 100-mF capacitor at 120 Hz. What is the phase a ga1hsc 4/p8 1.hz2qywr7lkz pngle?

参考答案:    
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100z(nj5/:saqcob7 7 d3f vsdej0-W resistor, 20-mH coil, and 1.0-mF capacitor are connedj (:s0d ae/ 7oqj7f svnzc35bcted in series?

参考答案:    
标记此题
130#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit consists of a 100-W resistor, a 10.0-mF capacitor, and j:so9 s1 a ,oz3by*3kr*qnxi ja 0.350-H inductor. The circuitnjbkxs39a1*3* yzr:qoj oi,s is connected to a 120-V, 60-Hz power supply. What is the rms current in the circuit?

参考答案:    
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor of capacitive reactance 30 W, v d))yaz;f n3land an inductor of inductive reactance 30 W are cdv ny zf)3a;l)onnected in series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle f55eyqp;y1qinyi 0*w gor a series RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz power iq0yyiy55*pqeg 1; n wsupply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for );/wne6 s xkrta phase angle ofr we) snkt;6x/ $40^{\circ}$ at 10 kHz?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit 3,it b+s z,s(xcjsgw )h c4)cg()ifs ehas R = 20.0 W, L = 200-mH, C = 10.0 mF. At what frequency should the circuit be drives)gch c tg )s)w(ii+ec34sfx j,s(zb,n in order to have maximum power transferred from the driving source?

参考答案:    
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output iew+vo yr9e3m. 3(amuqg/npy 9n an ac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is coyav9en u( +re/o p3m9w3 gqm.ynnected to a 120-V power supply?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an A; :)clphc8(rhnv pm3bC circuit is $63^{\circ}$. What is the power factor?

参考答案:    
标记此题
137#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ac series circuit has an impedance ofzqo1,r9 /njsj5z8t0qtg ge 3w 60 W and a resistance of 30 W. What is the pow5/znq re,3q10wt 9otg 8jjzsger factor?

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
138#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power factor ff:iu9dy 17cw cor a series RLC circuit containing a 50-W resistor, a 10-mF capacitoui91d ycfwc :7r, and a 0.45-H inductor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
139#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the resonant frequency of a 1.0-mF capacitor and a 15-mH coil in rgesw z2tn 3je ja.15.kv-a)hseries? hjasez.rnt1a)g -. wkv3 2je5

参考答案:    
本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
140#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is needed in series with a 4.7-mF capacitor for a resonant 0;hgbows/e 9ffrequency of 0 fw hg/o;se9b10 kHz?

参考答案:    
标记此题
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 3.7-mH induc;x j5s b)1s:rr9d)peze9v a crtor for a resonant freque ex er5rbz :avpjr)d);9s91scncy of 1000 Hz?

参考答案:    
标记此题
142#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor must be placed in*qp28i eneig53: ljut series with a 30-W resistor and a 40-mH coil if the resonant frequency of the circuite :tng8 l23 5ij*quepi is to be 1000 Hz?

参考答案:    
  • 姓名:游客(未登录)
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本平台(https://autodiscover.5edu.win/)支持练习，作业与考试(自动评分)三种模式，群组成绩统计排序导出，题目动态变量实现同卷千人千题。
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2026 无忧得胜-网上国际课程 (https://5edu.win)版权所有

    浏览记录|手机版试卷|使用帮助|手机版|无忧得胜-网上国际课程 (https://5edu.win)

    GMT+8, 2026-6-1 05:04 , Processed in 0.716784 second(s), 314 queries , Redis On.