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1#

94.28: Four identical lightbulbs K, L, M, and N are connected in the electricalaf;4g,c jx i4m cg,i cam4 xj;f4ircuit 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 lightbulbs K, L, M, and N are connected in the electrical xbjrannm7,7kj c11w9ti/ q(l circuijla1q /, m7tni kc9wr1n x(b7jt 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, M, 6pjcjio.3l r8 and N are connected in the electrical circuit shown in the accompanying 8jcjil3 .o6prfigure. 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,p1*rj7lmmukwc:b:+xp:wqde9x 9 ,ng L, M, and N are connected in the electrical circuit shown in the accompanying figure. Buwpm9l1 7* :u:cpqkg j9m,+end wxb rx:lb 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 rp5mvza s2 w07wesistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt batteryv2 0zpw5w s7am 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 connec1ax weivzx2c j0d/k,5ted in a simple electrical circuit with a switch and a 10 vole0zkv1/xic25w j x,da t 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 ammcjdc(d)xu jh17:(g mheter 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 at that point. Which statement (7c d1u:dchjh ) m(xjgis 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 s3 n yk rv)bwxh0ma0:0mhown, a shorting wire of negligible resistance is added to the circuit between poi mhy)rxb3: 0mwvak00nnts 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, w k9z0j6uacux 3hen a shorting wire (no resistance) connects the points labeled A and B, which of tj3a9u06kc x zuhe 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. Aoct: 8a) d*e qyv0ea-all lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) a ea:0aqvd) toey8c a*-lso 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 soe7.z t 2mp9.imyt9knhown. All wires are ideal 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 b2.9kem9y m potit7.znrighten?

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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 9za9;gz; njq2z8yfky shown, the three light bulbs have identical 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 cqzg y82j9 kfnaz;y z9;ompletely 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 reed: j2u*q1u8n/4goe: bvrr zosistance,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 the magnitude of the current at the point labeled P and to the magnitude of the potential difference from Wto X juvo z:obnuqd2grr1*e/ :84e?

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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 cy2b sdh ap)* pn(1r,yvonnected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to ty1s 2avpn)*,h bdp(yr he 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 l ,alvb:e gb3 ,labqg;:ight? gb , qglbae:3b :v;a,l

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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 sn).4ig zd3xq5mt: g iin the cir t.m3: idgi)4nsx 5gzqcuit 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 identi(h v x juxn;dhet;39x0 4ct y1y(l,kuncal resistance, all wires have zero resistance, and the batterdutx ;y ,;jh(x(9n4xk h0t elvcuy3 n1y 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 t0-rgkb-vlj zu/0r0t ahree lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking obagrt v/0uj krl00z-- f 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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