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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 are connected in the 4kby/+wv7 a)u27luh; doe8p ggfjf i4electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the f7fki7 2avgew/p )bu+ h4ljog4dy;u8brightest), 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 ar7*kokzel k95c*lst4g e connected in the electrical cik47* kls*koe95ct lgzrcuit shown in the accompanying 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,a-:e0;v lbu g aco1t,q and N are connected in the electrical circuit shown in the accompanying figur0 1v-ulg aq, e:ocabt;e. 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 liga2r+wc,x8d0rs txp3eo2,nz b htbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns 2ps30xtae+cxwod b,,n 82rrzout. 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 resistance of 1e swebqzf-8.9m0 va2l 0 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery aw0.a8 2eb-ms9lfq v zes 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 resistance of*e0- (xyvxxob9 rqf;w 7mhvwbs+ xs. * 10 ohms, are connected in a simple elecvoxhx* 0e x9;bfm(xybrwvq s+w *7s. -trical 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 sfn8 n 26pwcn:xhown has an ideal ammeter with zero 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. Wh2fcnxn w:8p6 nich 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, aceyvmt *0 g/c2 shorting wire of negligible resistance is added to the circuit betweengt /0*cyv2 ecm 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 wirectvm q)be;8j : (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 re :;t)bvm qej8csistance 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 iizix-sb3i jl:uz5lv.xb ;7w +dentical. When the switch xwi ; sl 73jbxv-:+uiiz5zbl. in the circuit 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 gsmw d1h,;ep0h/z n) hare connected into a circuit as shown. 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 bulb)0s /gn1wzm h; phdhe, #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 identi.q319 gqz,edq)vl khvcal resistance, the battery is ideal, and all wires have no resistance. Which one of the fo3hv)vldq zkg ,q91.qe llowing 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, the pq/1g3cihn4gv bw bsxf,/+8 q 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 what happens to the magnitude of the current at the point labeled P and to the magnitude of the potential dif 1vbf8iqghw + /qg4bpxc3 s/n,ference 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 bulbsxc; +h*t9u uzf connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, w*;tz9uhxfu c+ hat 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 ly fco:q4cj) (zight? yj4qc fz)co(:

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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 ammeterh0i1zw d jx/h5ma*1;knn , ma;nhkrn7 6+lvxr reading is initially I. The switch in the circuit then is closed0nm*k1v+rl 1ij hwn ;d5hx, x/a7hr6nzn a ;km. 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 haacdjw hl ) .5kll6*fs p,l+h6sve identical resistance, all wires have zero resistance, and the battery is assumed to be idpsa. k,+)6 *hfhds llw56cljleal 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 lightbulbs have the same resistance. 2 a xoe8jnb00lgg.z(vThe battery and wires have no resistance. What is the proper rank0 lj.b e xvgoazgn8(20ing 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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