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?作业考试练习?美国物理杯赛(Physics Bowl)?Combine Problems

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习题练习：Combine Problems

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作者: admin 发布日期: 2024-08-22 15:24 总分: 18分得分: _____________

答题人: 匿名未登录开始时间: 24年08月22日 11:37 切换到: 整卷模式

1#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.28: Four identical lightbulyzs/ :r ,hj :cmeb4( mn0z, v+f-m6y:og gxjhsbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order jygm0cjf :hmm,n4vbx(h+gs 6/- ey, szz::or 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 litzyv ,8, )mxdcbg63 rqghtbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank thby8 3zd,,cr6t)mqvxge 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 lightbulbpx* t82ks2c ze 7qjob5 dt)r;bjl39dns K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statements is true?jlse25*r2zp bj; dqxtn9 t7d3obc)8 k

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 cony;k6ouxo8 pjwf* z 8-3 gpl/kwnected in the electrical circuit shown in the accompanying fig wg8;zxlf-oo*w3uy/86 pk kpjure. 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, l1( nzcw fs vjat9ttb/*f;.+z are connected in a simplew*znv a9.t1t/;scf bf(+l tjz 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 ohms, are connehn:js+4mxacr y/* 49zj1v osected in a simple ele: zjoysces9mh14n/ *+xav rj4 ctrical 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 p d(cci5 1as,sammeter 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 p5cas,1cisd ( 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 wq:h l:1a ,nlk)egkd .of negligible resistance is added to the circuit betw: qedwg: .k)k,nhl1aleen 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 wirh 7vv hg7 q,zjadm-+/g .m7hwxe (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have7mgx 7jha,.vq-w hhz +dgvm 7/ 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 lighjd)+i,ug wf c3tbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which oth,udg)3wif+ cjer 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 s7g2v7buyy: e*f) ws7vrfq bp8 hown. 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 brsbu7y) rwpy:vq* b7vgef72 f8ighten?

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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 ligh lk (g(2 kqr9roj smf2p8f:cc;t bulbs have identical resistance, the battery is ideal, andlk cp:cq(of;s8gm2k 2f(9rrj 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 resiqq)k)31z6cxc,xhbsto qg.; sx 4 jsi,stance,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 4cqg)h o6cibs1;tqssk.,xxx j q3, z)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 has 4 identical light bulbs connected ty *e l+yyymb:8o an ideal battery.b:y me8lyy+y* If 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 one of the bulbs will not: 4d7ldzzjl8t2,g yd)2xttzv light? :l8x tg7 z 2tjvzl,d 2z)ty4dd

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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 i -kyz .eqsnhsn1-2y/un the circuit then is closed. Consequenty.yn-snhs21 zk/ qeu-ly:

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 identical resistance,0xwgfov+6)ak68f oqht7m xqw/ c,pt1 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 resistana xpq+x,tgq6t hwmc0v7ko6 w/)f f18 oce 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 circuigh,3e8 (-hut vph h*sjt shown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightnhs,* (-pghej vtuh 83hess?

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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