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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, Lvspx2e+ /r 5xgw1 pzo8 (xs(ef, M, and N are connected in the electrical circuit shown in the accompanying figure. In order ofpew( x 1sr gfe5xsv 8x+(p2oz/ 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 iyyj:dw.js.9snkj t . s;45up qn the electrical circuit shown in the accompanying diagram. Rank the cur wkq:jys 4 nj.u9ypdsts5;.j.rent 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 connectedg)iml1niu i y/ h),n3(c k5tgh in the electrical circuit shown in nim5 g1g),l / hn)(h yituc3ikthe 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 in the electryhtx ll sv6: 30)wej9jical circuit shown in the accompanying figure. Bulb K burns out. Which of t xt ve90 :3sljljhw)6yhe 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 lightiymia5v 6-+(dulpc-38x46s kbkg7 t4zbndbe bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a s 64a-zi 4 n(klsd6x3bpce8 7gyiv+ubb- dmkt5 witch and a 10 volt battery 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 bulbs each, witcgi)yar 2dz( 1db4 tx9h a resistance of 10 ohms, are connected in a simple electrical circuit gc )2 dzt(db9y rai1x4with 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 four juj.+z pw(ul 9 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. Whichzj uuw+. 9(lpj 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 resistanceces(fb*tp; ;bh+ b- jf is added to the circuit between points A and B. When this shorting wire is added,+bc ;sh *bf-( ebpt;jf 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) cozyq c ji oiab+pfa+8 70byq--gvcs-- .nnects the points labeled A and B, which of the numbered lightbufivyczg7-8bysqi q- a-0.+ p-+bjoca lbs 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 connecqrc2p7ulm2 ist79x n*dvv5+e ted as shown. All lightbulbs are identical. When the switch in the circuit i 5 d*s7mqxl 2ue9r7 vntc+v2pis 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 xhit;u 8 *lydmaor233light bulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S ih*m 3roi2xt 8ad;y3 uln 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 bulhn ync/cnjp+ d//m2y 6bs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly ijycn m/dpn/ync6 /2 h+dentifies 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 four lightbulbs hacw jsh/s e5ng-4t y*.wve 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 ts4nje/hw .*5w-t sygche 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 connected to an ideal battehwv ( 2l2f po2e-sm1bzry. If bulb #2 were removed leaving an open cirbzf2po m-hwse 1l2 (2vcuit 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 l55ooyevo kp5 -ight? p5e5ovy 5o- ok

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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 ammetebk.s se8cy37mc f4o+ur reading is initially I. The switch in the circuit thenes4mf3kucs7oby . +c 8 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 h ocmql2+ 8at/uave identical resistance, all wiresl+ /co2 8mtqua 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 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 kkil0va2m* z05t:cu k have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightne zv0cki l:m 5katu*20kss?

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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