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1#

94.28: Four identical lightbulbs K, L, M, and N are cz10uiessxi 7 23sw3dronnected in the electrical c0xi 17 s33swdz rieus2ircuit shown in the accompanying 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 light5 4xn qhm80 6nhvh)beo2nwk(gbulbs K, L, M, and N are connected in the electrical circuit shown ike4)gh6 q0w25 v 8bomhhnn (nxn 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 light c +m 3*mjag5oaw0ou.obulbs K, L, M, and N are connected in the electrical circuit shown in the accompanyu o0 wmcg3aoo.+j*ma5ing 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 are connected in the electftq;se29 vow-rical circuit shown in the accompanying figure. Bulb K burns out. Which of the following stat2 oetwf- ;s9qvements 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, cw4. ,dt ) a9x: co*zs1x1wquz0tockj with a resistance of 10 ohms, are connected in a simple electrtoox)z1: .4d*jc1k ,c9wxsq wcz0u t aical 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 of 10 ohms, are conneeg*cov0y g 0)(ifq:-;kp iwcg cted in a simple electrical circuit with a switch andg; i(*v iqogc -0f)ec0:pkyg w a 10 volt battery 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 ammetx1ju0afyf fh + jke9*;lr*ib ;er 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 electrical circuit ai;0 a +yhurx*kfb fflej9; *1jt 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 is adyhq 8rt0/i :nfded to th:hfy /0nri8tq e circuit between points A and B. When this shorting wire is added, 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 shorting wire (no resistance) connects the 9do)2jcygqa 9points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have res929do)a gqycj istance 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 d8o8kz i*o * uad0nqn;ll/x8z are identical. When the switch in the circuit isd *a80;8lkz/8 z*xo dnnliquo closed illuminating 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 are connected into a circuit as shown.;ji;il,w g,f q All wires are ideal with no resistance, and the ideal battery has emf ξ . ;iwq;li, ,jgfWhen 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 th/ 9wiod+)n+urs* ff zpree light bulbs have identical resistance, the battery is ideal, and allpdufr+s + nzo9)i /fw* 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, 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,i j9 ;s k3cq.8fty9yoj the four lightbulbs 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 the939yyo8 .iqscf ;jtjk 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 shoc+*1aanlj1p uo4tmkg4 x; */a e:inblwn has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed ll icj1 xo:l1akt ua4*bg /a+n;mn*ep4eaving 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 o)j+kp uzq2nx*f the bulbs will not light? knq *jxpu+ 2)z

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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, thee n zvf70:i/ju8 btsi9 ammeter reading is initially I. The switch in the circuit then is closed. Consequently:fi:znv0i7 9u/s8 etb j

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 ligho- b vwd8azks+2p mya 0 p8.zgw.g3p9kt bulbs have identical resistance, all wires have zero resistance, and the baps8ao.pd b+-8zvkw9 z3g. waymg k0p2 ttery 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 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 ha ef3o;phlo1e n29 as+ldko0 zk.v ny/(ve the same resistance. The battery and wires have no resistance. What is the prop0kyekozoo9;3s a /dpn1+.vehll f n(2er 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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