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1#

94.28: Four identical lightbulbs K, L, M, and Nq) bb phexun/r:5*+lx are connected in the electrical circuit shown in the accompanying5hbxb /x* r)q:l enu+p 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 connec50* wd- 7p*kqg q8h of7owlxlp5 i8jsrted in the electrical circuit shown in the accompanying diagram. Raq-5of lj7swlq5 i87*gr x 0* wkpho8pdnk 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,+ 2k.kh(dnff * 8 -xalgsadk0a L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following st g-d*sdxna0k l +28fkha k.(faatements 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 electrica.hyo( l jrfibc+tt-,-l circuit shown in the accompanybfy(- tcro lh +jt.-i,ing 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 connennxyj ;5) n+cp-jdkpj9v+f oe; wr;z)ctej9dnn ) pe+ )kynowvjc-fr;;5pzx+;j d in a simple 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 of 10 ohm-tc4c nfc4b6ss, are connected in a simple electrical cfcnb4s4t6c-circuit with a switch and 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 ammeter with zero resistance and fjylty6t.- 5 xx vr6d,mour identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its slrx.yvym-t5 ,tj6 6dxocket thereby 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 negligible resistance isvj37t4r2jdev added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Whivj 3je2rv d4t7ch 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) cu t7ks6u34q* /qy cszwonnects the points labeled A and B, which of tkc /7 wusq y3q6ts4u*zhe 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 are identical. When theq6;a*6sfzu zza ih/h- switch in the 6 ufhqzz *ash -zi6/a;circuit is 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 connectecpdwb ;*4c0b 0xhx 3ruuolp -81se(jhd into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuh*s81 erh w3bcd jlx(pxu-buc04o0;pit 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 li-;dzt340 cxogz w7 djxght bulbs have identical resistance, the batted47xzw x ct30zd;jo-g ry 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, 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,tw/iyk / -hsq9vhe 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 potentivqh9y /-swk /ial 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 l a*q2eq/j syw,ight bulbs connected to an ideal battery. Iqsyj/*q wea ,2f bulb #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 g)x mmkz67g+wnf 9(tu one of the bulbs will not light? mmgft(7 gn9 +6zu) xwk

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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 s f hj)c3ss6v2mwitch in the circuit then is closed. Consequenfvm s6 2s)3jchtly:

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 01mflqdrq b r.einz:f+a6;.c light bulbs 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 6 lcebrr;fnd:1ai mq +..0zq f 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 have the sa +1 3ce9arzok bt:iobhm6x +7tp jrz(4me resistance. The battery and wires have no resistance. Whaebi6h orr+3 cx9zzot(4 ja+7k: b m1ptt 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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