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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 liga13f lfk q m/:-zr h:sb/4gydfhtbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. ysrzdlfa4:/ g:ff -1qkm/hb 3In order 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 lightbulbs K, L, M, and N are connected in the electdytf y xs ha:3vf:2)lax6n)wh ;a:/x arical circuit shown in the accompanying diagram. Rank the)xa;v6d)y:: 2 yfs3 fl/ watha:xanhx 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 i ahs.qj*,zy1gh0,imr n the electrical circuit shown in the accompa.r*, smh0jaigh q1,zynying 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 electri8gu1auek/ s(he;;9 )lfd 5t cctksft9cal circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is true?;fekda18/tl su)stf9 u cg5hk9 tc ;e(

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, aro 8- 0ok,zqc0po/0i gcgiboq6e connected in a simple electrical circuit with a switch and a 10 volt batter coi0o bq8og-cozk0igpq0/ 6,y 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 bulbyl4ij 7i1;x q9yq,zxo s each, with a resistance of 10 ohms, are connecz jyi7q,l194oq;ixy xted in a simple electrical 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 ammeter with zero r zze ep,).tk8 e967q 3zlkaexvesistance 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 le3 e.zeqxvatz698z ep k)k,7statement 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 shortinwmcffp h) hi ea25:+r/g wire of negligible resistance is added to the circuh/cf2)wrm5pf i+hae :it between 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 wire (no resistance) connects the -w)d bg,cjv a,points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and hav bj)d ,cwav-,ge 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 4pv/imap;2d /1 ta jdmlightbulbs are identical. When the switch in the circuit is cla;ap2tmdmj/ 1p vd4i/osed 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 intrmn sbc7.tf+ wpkp99 9o a circuit as shown. All wires are ideal with no resistance, and the ideal rfnt.7mk9s9p 9pcw +b battery 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 light bulb)/sm.9/)dsogh un(jz 7jb yncs 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 on 9zsdbjujs)h/n g(/.m 7o)ycr 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 lig dk8:r0q1afjrm u(+ pxhtbulbs have identical resistance,the battery is ideal and akax0rf :+qdr m8j 1(upll 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 shown ,wth r+ecini5(, 1ho8;lg zos has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit 1 i+ wo; itneohl8,(r,sz hc5gthere, 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 followin3 n4to;9z:kxgtu qi4 r- gwv(tg circuit diagram, which one of the bulbs will not light? o9 tx- tq :uvr;gn ti(344wkgz

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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 initialonoz xbnn1)+09ug*p.cn oysg-f;g : kly I. The switch in the circuit :fbgk*gpg+nsxo0zucnoo9 . ; nyn)1-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 res fq 5x+iqq8u 3e3gq5pmistance, 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 cq qq5 fimg3xqep8+5u3 ircuit. 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 tnq1 dy5l x qu,1zik/-ehree lightbulbs have the same resistance. The battery and ,/u1edkx -ziq1y5qln 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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