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1#

94.28: Four identical lightbzl:fsffhi n(097 t; ywulbs K, L, M, and N are connected in the electrical circuit shown in the z0t; n (lhf7i:9sywffaccompanying figure. 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, and N are connected in the electrical t-2uq q.l -zdlc 2 lt.l-qzdqu-ircuit 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/jdryu+2;j 0m m)vqad lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompana/yjd 2u;m)md r0v+q jying 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, fdj.. ck6k d1xand N are connected in the electrical circuit shown in the accompanying.6fkx.k j dcd1 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 resistance of 10 ohms, are connezdpgc uw:(kqm4jkf+4 v3n9u)cted in a simple electrical circuin9cu(wp :) uk zmqjg+dv3 fk44t 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 rl+6,pe7z+ jntd27 xcqhy h7sj esistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the dtq,h+x67 7ej dh+sjn 7 czply2iagram 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 sho3m.:e. ,jtjm 3eze74vifg2id ljzf7g wn has an ideal ammeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the electtg: f7..7i2zi ,gjvfe4ezm l d3jje3mrical 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 scl o4*bb8ihiw90 s2w 2kmkh .w m8)wnihown, a shorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulkh i8*8i 22o .ww mh4wb9inmbclsk)w 0bs (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 resistanc ,v8 vuzyx+nn.e) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical a ,y.v8 xnn+vzund 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 cy,iz2m.ca owi*:9 iasonnected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also become brighter,9:aio wzamii*.y2s c?

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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 are conn bld (lr(v7hm1ected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When thhb rll7d((m1ve 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, 7p s(ek:uks.o82s yy nthe three light bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correct yoe7 sn: pskuk(.s28yly identifies the light 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 lightbulbs have identical resistance,the hqn94,wwm7qyejjua) d73n k-battery is ideal and all 4wnn-j)aj u q7,dmqeh 9y wk37wires 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 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 dubx w u52dnl0d /mmg)g;b 2c4has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed lea d4cg0n2d gwu xu/2ld) b;5bmmving 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 of the bulbs will not li:lri9;b xbh3zc v5ab 7g(1mrkght? b9; xbb gah1 ri vk3:c5rzlm(7

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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. The switch inm5v;v:x 9zgb f the circuit tzbfvxg5:m;9 vhen 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 5 5dnq p4zi2-oe4tkpbbulbs have identical resistance, all wires have zero resistance, and the battery is assumed to beb nop 45d-ie k4zp25tq 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 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 circul c(t g*9imx rbk4lsgd ::k7z:it shown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the prope7tx(9k:*g4li :zsrmlk gbd:c r 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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