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1#

94.28: Four identical lightbulbs K, L, M, andfmi /m7 8ps(gq N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest),7 mm 8fi/s(pqg 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, and N are connected in the03dz f;a,qhnr electrical circu;0 nd3qrhz ,afit shown in the accompanying diagram. Rank 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,7e0-tlxq p 77pg2 yoieu.v *aw M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M 0e-tw2 u v 7yx.igeaqpop7*7l 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 connected eto 8pf7h(+nml,l1xnin the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the foll 8hnelo7 pmntx(+,f1lowing 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 resistance of 10 ohmjft8nc52obg .- e;oh f ai:l1ts, are connected in a sij. fag :-oil;tb f5to21n8chemple electrical circuit with a 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 light bulbs each, with a resistance oiwe8b8j3y ze5ner7kp 58k h(kf 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown i(5e8ynk53kjeb8z8rp i w7he kn 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 r -c h8nw ;1i,b9r48rdhlktx0b ru.fiaesistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the electrical circuit at that point. Which stathkn-8xh.w u8rc4;f,br 9ab it0rd i1lement 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 wii/:4y; hz9aqlrv (cv bre of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Whil :/v 4vzriycba9; h(qch 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 shorting wire (no resistance) connects 7/ wb* lsk4rt*qdf 0aio8su8kthe points labeled A and B, which of the numbered lightbulbs become brutfsrla 4kq0/7d *ksbo w88i *ighter? 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 lightb73 jg:g.cx wwv.zm;c)mm;p sk ulbs are identical. When the switch in the circuit is closed illuminating bulb #4.jvmz;;wpk.m :wmgs7 g) 3xcc, 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 ligh +gy(9aw qv1tabro:/ lz6lvk3t bulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch q lr/:yt1kz6(b lg9v3oaw +av 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 bulbsp 63swais30 wo have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the ligh0soi w s6pa33wt bulbs that either become dimmer or go out completely when the switch, 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 lightbu6;u o:t;qd. vwntmeeoa, k25tz5 q 2ydlbs have identical resistance,the battery is ideal and all wires have no resistance. After the s5kuqtvowz tm:nt;2q dd,5o ;6e.2eyawitch, 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 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 4fp0ov;b-dy av 6jm3elight bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and fbajey4-vo m0 fdpv 63;rom 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 of the bulbs will not(il+j9p re:ix light? i x+eji:(prl9

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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, thwy7 wn-vsgv jz9gzk*6s74p7vdv a)q . e ammeter reading is initially I. The switch in the circuitzg .s77zsn9gw6vjvad-47k y q vvw*p) 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 bulbs have i+8mh-ltd07a (n dtkb udentical 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 resistancd70(tub+td han -km8 le is 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 shownu5p0l3dt5a *2by f;id kt)v7cq hqr;h , all three lightbulbs have the same resistance. The battery and wi 7h*klpf hqit 3vucd5)b a2 d;yrt05;qres have no resistance. What 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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