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

1#

94.28: Four identical lightbulbs K, L, M, and N are conial3i r++ sk;inected in the electrical circuit shown in the accompanying figure. In order of decreasing br s+ rai+ki3l;iightness (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, uth8u/dv *d/h M, and N are connected in the electrical circuit shown in the accompanying diagram. Rav8d//h t du*hunk the current through the bulbs.

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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, andp+;rvedi gki96 w:q4h(pu t0j N are connected in the electrical circuit shown in the accompanying figure. Bue kpuvj4i +h6 0rd:tp9iqg w;(lb 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 are conn)jf0zk1i cmj yugj8 .3ected in the electrical circuit shown in the accompanying figure. Bulb Kj.081fiyu)jmz3 jc gk 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 lighjc) 87 utprw;3l cv39oubj8fz t bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram belowczwb u3j7 rj;uvltc f98 8po3).
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 light bulbs each, with a resistance of 10 ohms, are coc)tun(:ln ) vvht*e0 znnected in a simple electrical circuit with a switch and a 10 volt battery as shown in the hcv) (n 0un: e*z)ltvtdiagram 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 zx; xwe pb vpc0*r: u8qr)(g:esero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently br x:s;* 0w:vp c( qp)r8eerugbxeaking 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 negligible resistance iso23mtp4c/v n:b jzcq: added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbs (all identical) in the circuocc q :mnvzj3 t/42b:pit 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 shorting wire (no resistance) connects ti2/s rv0w;iqyg*6t n ohe poin*qoi 0w6/niry;vgt 2sts labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resistance R.

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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 connected as shown. All lightbulbs fqgj;a2bu*ss,x5 7yp are identical. When the switch in the circuit is closed ills75;s ,p*q fyb2jguxa uminating 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 li b r+qauyln*s (:2pat,ght bulbs are connected into a circuit as shown. All wires are ideal+(sy qn ul:2p*ta r,ab with no resistance, and the ideal battery has emf ξ . When the 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 ihg9t 1;i s e+gznr14wyw0us*d/id 0(hanz ;hgdentical resistance, 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 swi;t01hs/nzzhi(a49;d* hn0 edr 1 ww+g iggyu stch, 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 lightbulbs have identical resistan ynlqdh:*:wbu0)e5eh ce,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, which one *hu:eel50 ):nhq ywbd 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 from 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 connectejm +hz:()e af,gw)jmqd to an ideal battery. If bulb #2 were removed leaving an (qmze)g j jf+m):wah,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 circuinql ;:o v-aej1t diagram, which one of the bulbs will not light? e1- lajqon;v :

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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 initi5ms qix76 ck . 0q*kjt(k)1q1rhhicajally I. The switch in the circuit then is 65a*m it0hs )jrxq17qij1.kk(cqhck 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 bulbs have identical resistance, tj g rj/sm/4q 79yp9jh x9n,owall 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 is added into the circuit. Which of the light bulbs will b w79y9xqsoj phn /t/,rgm4 9jje 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 showygb5*er. s /+tvn2o rrn, all three lightbulbs have the same resistance. The battery and wires have no resistance. Whre.o * /r5 bt+gvr2ysnat is the proper ranking of the bulbs’ 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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