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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 identica 5 wooh,*mi (eii+hzocj8ob .4u5;nmfl lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanyiji,;e8.b(4 wonicof5 h+h *uo omi5mzng figure. In 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 +zz3eyah 0 j+jk29 wbsz2x(ulare connected in the electrical circuit shown in the accompanying di 92 ujyh+akzze+z0(s j lb3w2xagram. 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, anz 5nas1mg-k;f)ykyx )xz r/9bd N are connected in the electrical circur)yy ka gz1 nx9bfsm5 k);xz-/it 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 vwrcsxb9q)+koh4 2wh az ;-x +in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statementw2sk )9chh;vo- xaz4rq +w+xbs 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, are co/.i4. uch4 l 6covtwmwnnected in a simple electrical circuit with a switch and a 10 volt battery as shown in the d64 .cwic4.om/h vutwliagram 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, fd bfww0/) qaredzj,dr,czhd-), 5 n;with a resistance of 10 ohms, are connected in a simple electrhf 0dewzrqf;)rba5 d,dw djn -c,/),zical 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 resistanpdk/zda, b+*1 oisq 86 lj3qomnm:vo5ce and four identical resistance light m l*8m+po bsk5v1d qo,6qa3z:o idjn/ 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 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 added8c;nycp /*5a krc) 1iyxc(ln t to the circypnc1* ktn c(a x /r5)l8ic;cyuit 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) connects4f qxwuj nrd-m;1p m6ui .).uo the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are 1x uno6u4umj;f-dr wmi.). qp 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 lightbulbs gp34 djc9-v1jiiouj 8 are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) 3vpijjo-8jug1 d9i4c 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 arf 2)vopoo,2s de connected into a circuit as shown. A2 ,v2doso )fpoll 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 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 ident ; 31ykxawcx:eical resistance, the battery is ideal, and all wires have no resistance. Which ox:yw3 k; axc1ene 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, type6i as,)k,0 yhgm5 the four lightbulbs have identical 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 whap,yt)5 kg0y6 e ha,smit 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 0 t(npse p,p zlhq/3d ttv;2.ilight 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 n;/sq0 i dpe ,lp3v(tt.tz2hpfrom 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 oikgqnzpdte z 03e ey -)*,ljl5*(knj5 ne of the bulbs will not light? z*enyj qlp gd)n*5j(el z3 i ek0kt5,-

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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 ammet -cj.7x rni/ycer reading is initially I. The switch in the circuit ny-xicj c/ 7r.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 resistance, a 3nt1 7bd*cyv*qvt/lj ll wires have zero resistance, and the battery is assumed to be ideal wb*n/1tq vtdyl*3j7v cith 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 lightbxb 7rx* 5o6adoulbs have the same resistance. The battery and wires b7* 5xo ro6daxhave 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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