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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, adx;q) 3 ;xm hjp+k)jmq.ivm, vnd N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), the b3hpjm+;xv;xqjivm k d) ,)q.mulbs 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 electria: p6ccsxn u j7rc;5oo+)hv m;cal circuit shown in the accj5;vro+o6c u;c7) s p:a xnhmcompanying 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 connecte.spb40cvjvvbp 2/4 t 3amup9qd in the electrical circuit shown in thbb p2 .c9vj vmtas304qupv p4/e 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 lightbulba.ul0 uw8yt a:ob 0i4ds K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statet ia.wla0d0y8 u:ubo4ments 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 10l9r1 8n kplei7 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram beli lprln k9e178ow.
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 resi pb/ xg9(gj)z9gb mx-istance of 10 ohms, are connected in a simple electrical circuitimp99ggx( x /)zbj -bg 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 resistance and fou x/tdq/rs8mr f+80u pur identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the el8 mu 0 rfrsu/dx8p/t+qectrical 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 resista7fjzj 0td,; nn9vhs,8d, jceznce is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which btn0djed;8jz,vs cj,hfn, z97 ulbs (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 resistan. k(cayhe1ob/ +rw ht8x5na g7ce) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical a( 8 .751ahyck rbtog+h/wanx end 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 are identical. Whenxv1u.q 5wm*e n the switch in the circ*mw 5qn1x.euvuit is closed 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 into a circuit as shown gp2tyzjm2* wox-u 9b;. 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 bulbt-y wob ;*2gpj9xum2 z #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 h dv1(/objo f b; gp6/mz)8jvygave 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, in ;z (vgyvj/o o)b 6bmfd1 pgj8/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 )w bq/- cie -cg,;1aw wx/4mz(hagyqshave identical resistance,the battery is ideal and all wires have no resistance. After the switch, S,/sgqghy b;w--,wi/ czwx(cqm 4 a a1e) 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 has 4 identical light bulbs connectcx08)a lkn8v2 ylziac4 l tee+duu615 ed to an ideal battery. If bulb #cax en6l4d5l1 )uel zi0y8t8av+2cku 2 were removed leaving an open circuit there, 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 circuit diagram, which one of the bulbs will not light?/dcb4 v2 hybz+6h x8f/lixmy+ xx/h4 +clhvzbi/dm 682 f+byy

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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 5pex,1jgq 2 r zor4.dbis initially I. The switch in the circuit then is closed. Consequently: rzo dx5j e4prq2bg1. ,

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 resistab ;y+v.mv g o7-,vytwtf0 n6qvnce, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ t7w v g0q+-y ;f6 vnyvbtovm.,. 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 lightbulbs have the same resistance.qs).r 4cyvz fcwmcn 2 j0w6m/-wjo36j The battery and wires have no resistance. What i/4 cy) c6v qjmn3r0ws6c2o jfm.j ww-zs 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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