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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: 游客未登录开始时间: 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 lightbulbs K, L, M, and N are connected id7;s/qyxbm6d4;45e :dkp:ta,bz rrcrlc u *dn the electrical circuit shown in the accompanying figure. In order of decrea* uksdatl er4:y zc7pr ,rmx;d6 c d54b;/:bdqsing 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, Mff6h1v h eqro: y6ce32, and N are connected in the electrical co6fre:6h1e2 vyq3ch fircuit 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, and N are connected in the elegv(q 7vdn8 p ter;m,l:ctrical circuirnepvlg( ;vmd8 qt7: ,t shown in the accompanying 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 lsxd bru50cl+piy52 j.g)1suelectrical circuit shown in the accompanying figure. Bulb K burns out. Which of th 1+ d jy csgil.02urs5p)5xbule 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(gr9hx ld .5kft;r8cs9gmb.r a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram g5t c( .x9d9rlrs8kmhrg;.bf 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 bubs ht weu-29qxcc1;+ m8pyk,qlbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram bewxbpu+y k2q,tcc q; 1- e9m8hslow.
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 resistrl se2; m1ve1sdpeih am b5 44lru860yance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permbima01 4sp6h1erud e 4l8vy 25rl;esmanently 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 wsx;8 v,a9r6loexy j q3ire of negligible resistance is added to the circuit between points A and B. When thi;6jrqs8yx3v ol ea9,x s 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 shortinc1m nuy6 v+/vt; f0h kn*t*aipg wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs becom;* vnt p/ucm 06*1+ftikanvhy e 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 sh5j4+b2 huieq:fa6j*ck )nah qown. All lightbulbs are identical. When the switch in the circuit is closed illumina)hq2cb +uq6 f ahj jki5n*ae:4ting 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 it3q v.gi:su,-to a/;r(kqo vx nto a circuit as shown. 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 otk;vuq:otvqg o( -.,ist3xra /her 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 light bulbs have identical resistance, . z+k lm2crk 9d 7jkb)0c2budbthe battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the li.zkbmlcu20b2c d kbdj+r ) k97ght 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 ,scz v 5bo8o0xfour lightbulbs have identical resistance,the battery is ideal an8zxo cs,vo 50bd 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?

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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 shokmjicnjs r mwe/2i6)2a3i8f(wn has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and from Q toa3rj8i6je m 2ckn )2m sfiwi/( 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 di)(f*1 k-*e vuxrvh sc6xrks. fagram, which one of the bulbs will not light? x -()sv**s c k6fkx.rfr1e hvu

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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 inic ) rg2r;7a fh1t 6 6whgeta9w2.wfa9:tritlotially I. The switch in the circ6g 76) whtat9ola:2 a i9w2gfthfc r w.rer1;tuit 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 havls dwe.av :;q;e 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 into the circuit. Whq;v :le.dasw ;ich 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 havb(ensd- z 2 tlk(n)(h8b dpic,e the same resistance. The battery(pzt8 bnl(sd-)c( d ,ikbhe 2n and wires have no resistance. What 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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总分:18分及格:10.8分时间:不限时

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