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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

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.28: Four identical lightbulbs K, L, M, andw1uo:9c 4igdwq xlyje11g4y;6*stz f N are connected in the electrical circuit shown in the accompanyi o:sy6i1;zwf9cq1t1jy 4xul e4 dg*gwng figure. In order of decreasing brightness (starting with the brightest), the bulbs are:

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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 electrical9w-rbbv5g 5qx circuit shown in the accompanying diagram. Rank the c gb55-xq b9rvwurrent through the bulbs.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

96.37: Four identical lightbulbs K, Lr .;-yo7)dcey y e ,ffzn8tp4v, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of th4fvyf 7 eeo8;p)y -cdny ztr.,e 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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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 electrical8qsrx5x a y2umj/+e8dzoe 1- m circuit sho2x oqre zy8e8+mdm/5a xj s-u1wn in the accompanying figure. Bulb 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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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 oh(*e/afoa u 8afms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram below. *8/au(aaofef
The steady current in the above circuit would be closest to which of the following values?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.22: Five identical light bulbs each, with 2+gz4)-paqehdd/dix *mv2 rb- s7nr k a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as srrp2hxivmq 7s/az)4 g d-de-b+*n2 dk hown 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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单选题 ( 1.0 分) 切至整卷模式搜藏此题

04.39: The circuit sh7gih5dfbn fe qg1 l:twg(+n+9own 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 breag+(+ghf td w1n5:bnl9if qg7eking 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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单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.37: For the circuit sd n:6qnag)4s /+ox bn sfd.;cbhown, a shorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes outdn:nsd aobs6f4+/ x.;)qn bcg . Which bulbs (all identical) in the circuit brighten?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.26: For the circuit shown, whe n94ate*ii .vqn a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lighie.9v4nq* ia ttbulbs become brighter? Assume that all four bulbs are 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 nl0 mtt.x pkdwp9v 416mt )3)x )xrjfushown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also3t 6)dpf rxtjtpv)nw1k 0um94m.x)lx 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 cod8 8kv0+mo3zwpoi u3nnnected 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 cir880vu3inm oz 3+w kodpcuit 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 b+ bj4it6 5i tlnb)ff3oqx* ;gqulbs 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 or go out coq);3q 6lotf5x b tj*nfg+ii4b mpletely 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 resista9gxn2 r s7kok8nce,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, which ok87ksrg2o x9n ne 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 lihgn hr,x f)7h-ght bulbs connected to an ideal battery. If bulb #2 were removed leav- hghr7),nh fxing 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 followin/ ebh d5t0zho:g circuit diagram, which one of the bulbs will not light? h/tedbo0 h5:z

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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 r6(u :vb7t+ dlfa sz16lsmutt)eading is initially I. The switch in the circu 7)ttmld+zu 66:sls(v fautb 1it 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 circuz ygdh)g p:/pe2enj5+it shown, the four light 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 cir5 :/ gpzn2jdgy e+peh)cuit. 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, alloqtm73 , orvj)v ;qj7k three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightness jqj;ko t v)7om,7q3rv?

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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