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1#

94.28: Four identical lightbulbs K, L, M, and N are connected in8 g/wene tez-9 the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), the bulbg 8zw/e -9ntees 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 electrsvhis, v3 ikjre2yv62wz 0. 0yical circuit shown in the accompanying diagraij.2h0 syk60vvi yr3w zse,2v m. 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 ligh9 d23+bl 5szlcky2uq atbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. B+k zl9laub3c5q22 s dyulb 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 coni1c0c5cujob:k 9x qj)9bj 2 j nfd2f;ynected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the followingqydcb9 jn:bijucj1; of 9 0k2c5xf2j) 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, ar:5mg7a klfeq,r r -2mwxc,c9 pe connected in a simple electrical circuit with a switch and a 10 volt battery asrg:w 2fex m7l, 5mr pcqak,9-c 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 1)o-qp*tnu3r9 e5cks*)gzp ob0 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the dige)*s -z)op t93ubn c5orp*qkagram 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 idw lzl (qvqj*umo/3 dylb y8 7ygo5we/) +d+v3teal ammeter with zero resistance and four identical resistance light bulbs which are initially i yd*8v /ey3t(q/w7j lgl3+qmzoovby 5 + )uldwlluminated. A person removes the bulb R4 from its socket 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/ e q//jd qtaj56d6qrhx s7d0b, 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 bulbs (all identical) in the ci /xs0t5j/habdq6e qr76/q djdrcuit 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, mf1a.m(nzo zcz)b,+r when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bu(. +rzma b1)zf cmo,nzlbs 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 fv5 er4qrh 59egrr *gm/j7/opthe switch in the ch4 r5ge jr 9q5f7op*gre/r/vmircuit 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 brp drlir-x.5 :e8g .hbulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξr-e5 8xldibh gpr .:.r . When 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 circuix tfknq.14n 1ot 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 completely 1fo tnk nq4.1xwhen 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 fourlb7t.ss3di* d, k: t) 0entpjn4ypl ,d 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 the magnitude of t3k pjnls,7.i ty tpsdb,et4d0 *l)d:nhe 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 light bulbs connected p.:2.ixf,z fvb* ;iiu jat.wk to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both k z w2 iaf,bvi.jpt* :x.iu;f.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 ci,5dm:ay) wy-8xi a/blkqibv 8 rcuit diagram, which one of the bulbs will not light? ay ,xvwbiq858-ky:)mbliad /

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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 circuin2 tima /nuzte .*u8e4t shown, the ammeter reading is initially I. The switch in the circuit then is*4mtita uu/e 8nez.n2 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 shw 90um8sxx1c k0r*c opown, the four 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 closed, a wire of zero resistance is added inx 0mu*w1k 0pr8ccxs9oto 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 p-kp ,s -npkl 2t69f2kkld r4xvyo27g lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper kpxlpl4 ,pyof2gn 6k92t rk72 s-dkv- 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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