Combine Problems - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?美国物理杯赛(Physics Bowl)?Combine Problems

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习题练习：Combine Problems

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作者: admin 发布日期: 2024-08-22 15:24 总分: 18分得分: _____________

答题人: 游客未登录开始时间: 24年08月22日 11:37 切换到: 整卷模式

1#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.28: Four identical lightbulbs K, L, M, and N are connected in the electrical enugl+w8.wx +5s x0x0g0 zkcw03vtm lcircuit shown in the accompanying figu.v u 0cwe385mtln+gl0xxws wk0x 0+gz re. In order of decreasing brightness (starting with the brightest), the bulbs are:

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

98.27: Four identical lightbulbs K, L, M, h/p 2a5o7b4tk tulz l6and N are connected in the electrical circuit shown in the accompanying diagram. Rank the current through the bulbs. zkh/6u2t5o 7paltb4l

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

96.37: Four identical lightbulbs K, L, M, and N are connected)p( f-a l+e tk9lbsxa0rce/f5 in the electrical circuit shown in theb0sc)p-9eft r 5+a /efllka(x accompanying figure. Bulb M burns out. Which of the following statements is true?

A. All the lightbulbs go out.

B. Only bulb M goes out.

C. Bulb N goes out but at least one other bulb remains lit.

D. The brightness of bulb N remains the same.

E. Bulb N becomes dimmer but does not go out.

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

95.32: Four identical lightbulbs K, L, M, and N i75gwl.rc 2wx7p9 ami are connected in the electrical circuitmc7a5 lr9 iipw2w7g .x shown in the accompanying figure. Bulb K burns out. Which of the following statements is true?

A. All the lightbulbs go out.

B. Only bulb N goes out.

C. Bulb N becomes brighter.

D. The brightness of bulb N remains the same.

E. Bulb N becomes dimmer but does not go out.

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.21: Five identical light bulbs each, with a resi jt6ia: c1kw(qstance of 10 ohms, are connected in a simple electrical circuit with aa(:1kiq w6jtc switch and a 10 volt battery as shown in the diagram below.
The steady current in the above circuit would be closest to which of the following values?

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.22: Five identical lig urqo4 p147unght bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt bar 7 1g4upn4quottery as shown in the diagram below.
Which bulb (or bulbs) could burnout without causing other bulbs in the circuit to also go out?

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

04.39: The circuit shown has an ideal ammeter with zero resistance and fou;uz.j+fsgy-,p o zl ;jooxta -b:y;/lr identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket t.oz l+:xty-sg;,/lyp; z of ; j-ubajohereby permanently breaking the electrical circuit at that point. Which statement is true of the circuit after removing the bulb?

A. The voltage from B → C increases.

B. The power supplied by the battery increases

C. The voltage across R1 increases.

D. The ammeter reading is unchanged.

E. The bulb R2 maintains the same brightness.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.37: For the circuit shown, a shorting wire of n 6)vw taviflx. y 8a,bfzs.6c)egligible resistance is added to the circuit between points A and B. When this shorting wire is add,cb.yfafs l zwv)v6)6xiat 8.ed, bulb #3 goes out. Which bulbs (all identical) in the circuit brighten?

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.26: For the circuit shown, when a shorti- rpr. 5mz8ryxw:q q-bol/ z.bng wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resistance Rrwlxprr -z oqb-.y/m.8b5q :z.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.35: A circuit is conytjs4 a19q m6eqov g(4nected as shown. All lightbulbs are identical. When the switch in the circuit is closed mat voqq j4 4eg9s1y(6illuminating bulb #4, which other bulb(s) also become brighter?

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.38: Five identical light bulbs+0ibt /j( ai1ejdaa r7 are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When th+j i etij 1a0(draab7/e switch S in the circuit is closed, aside from bulb #5, which of the other bulbs brighten?

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.10: For the circuit shown, the three light bulbs have identical rer( wi9f3h;i i3p1c/3xvjq t3a zsms2g sistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the light bulbs that either become dimmer or go out completely when the switch, j3pigrw fi xt2;a 9sci 3q/sz1h33mv(S, in the circuit is closed?

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

15.39: For the circuit shown, the four lightbk*5mz/s3 jhxto + +nydulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, which one of the following choices correctly describes what happens to the magnitude of the current at the point labeled P and to the magnitude of the potential difference fr tso /5zjdm*ynh+kx3 +om Wto X?

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

16.31: The circuit shown has 4 identical light bulbs connectewwtd 4 ,,ck(zun(gle (d to an ideal battery. If bulb4,nlc guk (dzt(w we(, #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and from Q to X?

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

07.30: In the following circuit diagram, which one ocb-m,qcf dzo9mj0p . 4f the bulbs will not light? j9-dq 4,bo0 p.mcf cmz

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

07.33: For the circuit shown, the ammeter reading is initially I. Th+t(c5 cko bk;oi)ee6ukt. gn ;e switch in the cir+ue g;tn(ioc;eb ktkc.5 ko)6 cuit then is closed. Consequently:

A. The ammeter reading decreases.

B. The potential difference between E and F increases.

C. The potential difference between E and F stays the same.

D. Bulb #3 lights up more brightly.

E. The power supplied by the battery decreases.

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

11.38: For the circuit shown, the four light bulbsi0zrn31s: 0 ukaghg)uta -(m n have identical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the switch, S, in the circuit is closed, a wire of zero resistance isi-k01mgnnz0h 3sa( ra g)tu:u added into the circuit. Which of the light bulbs will be dimmer after the switch is closed?

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

14.22: For the circuit shown, all three lightbulbs have the samel j u943plkzy2 resistance. The battery and wires have no resistance. What is the proper ranking of the bulbljz34kl u2y9p s’ brightness?

A. $Bulb 1 = Bulb 2 = Bulb 3$

B. $Bulb 3 < Bulb 2 = Bulb 1$

C. $Bulb 2 < Bulb 1 < Bulb 3$

D. $Bulb 1 = Bulb 2 < Bulb 3$

E. $Bulb 1 = Bulb 3 < Bulb 2$

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