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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 lightbulbs K, L, M, and N arbs hb5w:my s/-3td l*ea gl fn)/rv/:ve connected in the electrical circuit shown in the accompanying figure. In order of decreasing bright/ nb vs y/::rs3 )lbg/mal-5 eh*dvtfwness (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 electricajsvnec(9rdj6f7- c8c l circuit shown in the accompanying diagram. Rank the current thrf (rsejcn6cv 79c8jd-ough 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 elect : kpaom:i*se8qraf1fdn77)xrical circuit shown in the accompanying78a*s :feni1rd) x:7koqpmfa 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 Kdikn ohx(qv i3b/t, 4y3.9ghs, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb 3k4v q, g.b(hxth3 s/9noydii 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 resista:wi 0gm y/j9bance of 10 ohms, are connected in a yw m ib/j:g09asimple 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 ligr/a5rlhe63s yht bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as sho35/rashe ry6 lwn 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 zero resistance+: ayt wm3b4bl 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 circuit after removing wt:+3lm b4y bathe 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 resistancaas4- q:why9zpb/fvl.g 48sse 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 4/.s8wpaz qy9f: v-b sh4agslcircuit 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 shortingmys1ky:89ih a)p/ x gg wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resistanc9/ :kx1 )pyymg iasgh8e 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.9 ukgeo 3 rg.g9s7ymf, When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also becomuygm97r9s k.eg f3,go e 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 sma8 :ecy zdpc/ 4s p1+x)5wikrhown. All wires are ideal with no resistance, and the ideal az iryx+kc/m8) p:pwse54d1cbattery has 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 lf qkmw/q9j ,3o r)thliy7ep 07ight 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 of, ye jo/tqq m7pr0h3l 7kw)9ir 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 75 dacw44 (qfds unzp/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 the current at the point labeled P and to the magnitude of the potential differd( 7nc/4uf4sa5 dzwqp ence 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 to an idvtuf w5nrba 82e(pg 3*eal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 *8pafnug(3 br2 tew5v 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, h mt ;wd co,(6,4 gq1d.5unuxqhfdmnt0 zk0c5 which one of the bulbs will not light? t hoq dqf0ux51,; 5d (4zwd,c 6hnmcnu.kgmt0

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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 in8fy/8l5up v7z9mht3 r q)c jffitially I. The switch in the circuit then is closed. Consequentlj9fq3f7yl h/ 5v)p frz88uctm y:

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 ligxh3ccyf44i 6inw h 7t1ht 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 into the circuit. Whwc4ixn y6th 34hi fc17ich 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 haxz gmh8 -okze(2az m (j0sw;3kve the same resistance. The battery and wires have no resistance. Whath (we(-s3ommx;8zzzgk 2 j ak0 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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