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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 h ejodccl,a06cn1f9w -t7 gk2N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (st c jkt e,-o2lwn 0fd96ch17cagarting 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 k v:b5lwk7+ t3ai;9g:yhc 1rzmj( jk nN are connected in the electrical circuit shown in the accompanying diagram. Rank the j1kwbr ::g+(mt kj 3y7 li9n5zha;kv ccurrent 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 electrica *grna -2jyma4l circuit shown in the accompanying figure. Bulb M burns out. Which of trjm*ayn -42g ahe 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, apl:cgq6*tfl3+egqmv9 i s /crs p8 k;7nd N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the fl6g38 q p/* 7 c;v+sgpsi 9qertkl:mcfollowing 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 ohzlefn 862 yw+rf ad*t0ms, are connected in a simpltwr+ 8*efn2 lzyd0fa6e 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 resista8 (no de *b*ua+ma6brgnce of 10 ohms, are connected in a simple electrical circuit wit8ue(6*+aab *mgor bnd h 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 zerotc2c mou mcl 8 s-k*19wnd+-zu1iz)mq 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 is true of the c9m1w 1 -om qizn)uc+8c*cmk dtl-usz2ircuit 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 is addex: h:vi4zh+r0v pbeg6rph j08 d to the circuit between points h4h0g8e+iv 0: hjb6p:v zxrprA 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 wirep0:m 5a7 3 0iqqwxjfmu (no resistance) connects the points labeled A and B, which of the numbered lightbulbs q:qia j 3wfm7 u0mx0p5become 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 lightbul;qavq c,8x,pzbs are identical. When the switch in the circuit is closed xqz c;pq,av8 ,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 connected into4v:c u *2 .hqtdxlkmt) a circuit as shown. All wires are ideal with no resistance, and the ideal battery has)2x c vkt*.4qdm hu:tl emf ξ . 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 circuit shown, the three light bn 2r*i0cmuh+i ulbs 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 when the switch, S, i +rn*0cmhi ui2n 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 identicalvnj1*9k rke1 z resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, which one of the follojezkn 11v *r9kwing 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 shown has 4 identical ligh1 /h: k:r0jytnjkz+brt bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit thjrhytn+ /jr k :bkz01:ere, 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 circ+yhvv 97ptm3eq-gysr3w v7n2uit diagram, which one of the bulbs will not light? hp3+yn2v9s r 77 eyvtq-w mvg3

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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 ammjw ztsnue674/u-tk h( eter reading is initially I. The switch in the cihw6 k t(uz/u7nj st4-ercuit 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 identical resistance2 :x)zv(x z1ob uffpe7, all wires have zero resistance, and the battery is assumed to be ideal )7bo: 2zef1fzpxx(uv 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 three lightbuld7 wrf7ly4cq0ah ut78bs have the same resistance. The battery and wires have no resistance. Wha77lch7t0q wura8d fy4t 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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