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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 electricbw ee3p dpuh0q9) )7i .cut8ucal circuit shown in the acq cupdp) cw)b839 07tehueiu.companying 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 are mqvc9q-o- i u)connected in the electrical circuit shown in the accompanying diagram. Rank the current through the bu-qq- iuoc9 m)vlbs.

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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 connected in pm62z ,8xze /lqyqc6mthe electrical circuit shown in the accomm682zqcl,q expmz/6ypanying 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 N9,xxue8sm a1i are connected in the electrical circuit shown in the accompanying fx1xam, 98eusiigure. 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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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.21: Five identical lcd sv-5) f0mn;tz uthe86j;8sumu2qhight bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram below062u)h zft8 qncd hs; 8u 5jtsv-m;emu.
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 10 ohms, are co x*kr,zz7f4kp nnected in a simple electrica,p 4rkxzzf 7k*l 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 ammetr o9dn pu 6e:9maeb;0 wgt94duer with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes tn0ou4du g99 9db eeat;pwm6r :he 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 sh .;mru)v:sqc: 4gkq usown, a shorting wire of negligible resistance is added q;.squ u4k grs cm:v:)to the circuit 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 q;k* 4 +ozjhknlf9 ani .mfm85shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical9l4fq5 aof*m8n j ;zkhk.+i mn 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 are identical. Whe ka77p(u uhb3mn the switch in the circuit is closed illuminating bulb #4, which other bulp a7ub h(37mukb(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 a8bxjrf9 s)pc, feevv)r -j r2a6, 9mcds shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuit is closed,r2er8v)bvcfpx m), farjd6 99,ej- sc 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 identical e1u qozt:miv5, g4q-xresistance, the battery is ideal, and all wires have no resistance. Which g uq5i:xmz,otq4- ev1one 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, thpk1hkoze - z7nn98y:t8o pz8si sg4 ,w)j3 pbse 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 differzgzns438 s8th1ewyk kz9ppjo8 p) :bn7i so, -ence 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 idealts t 9keh31lt8 battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and frok1elt39st8h tm 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, +xq x;q*fvsn2v:(0l tgl umr1which one of the bulbs will not light? r slm:* 0v1xxqvg2ft ; lqn+u(

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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 ammex) l3qwzaqddw ;d, w5jsp(jtty,47 3iya g 1/uter reading is initially I. The switch in the circuqs4didw3, /5tgxlj7, ) dqawj3tu(y y wzap;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 circuit shown, the four light bulbs have identical resistan bdyfx2kf )g5(2a29p9 jp cfzjce, 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 circuit. Which of the light bulbs will be dimmex2 9gpbyf29 (fz)kda5 jjcf2pr 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 samesh ;bi 2xh.:pdbq80 xf resistance. The battery and wb28: 0bh;ihx xs dqp.fires have 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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