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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,o5 g n+o6v l)ybdmmoya12+vd are connected in the electrical circuit shown in the accompanying figure. In order +gd mb2al+n6oo5y) odvvym ,1of 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 in the electriwkmqt0 ,p(gs6cal circuit shown in the accompanying diagramqkg tp(m0s6w,. 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 are5ulhl x nc)6m9 connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the folluhx9) 5c lm6nlowing 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, vpf wky /g5:t/vmi)(9+3buo* iplkhcfw4 x f8 L, M, and N are connected in the electrical circuit shown in the accph4 tbovvfi)u:5my3x8 +lw fp *(w cg/k/if9kompanying 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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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 ske pd d -0u4s*vv7li.g4:at ua resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagr4:.suavd kp4d0u-gelst v 7*iam 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 buk hjk6icd5 ,w8lbs each, with a resistance of 10 ohms, are connecdhkcwi5, k68 jted in a simple electrical 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 shoyuz yaj)teth449-+ hb wn has an ideal ammeter with zero resistance and four identical resistance light bulbs which areyt ye4h)t bzua4+- j9h initially illuminated. A person removes the 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 shown:o5x9-;mggo bbvte xu4j pd5no4v1 0f, 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 out. Which bulbs (all i e59 f:o1oobxpnm ;4uvb0t5gjdx-gv 4 dentical) 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) connects the 49mzjk vkbxp bai:l,kq/bp8um. tx94us;+,o points labeled A and B, which of th; 9t4k j:uo xpzba4v xb+,9mk kui8/bs,p ml.qe numbered lightbulbs 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 shown. All lightbulbs are od 84 benl7zf1identical. When the switch in the cdn efl48 o7zb1ircuit 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 a shvk .5ypg1/ps shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the swp /1ygvh.pk5sitch S in 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 butf1 6rpw )r4 zsdq:bw+lbs have identical resistance, the battery is ideal, a)4+rtqf r zb61ps:dwwnd 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 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 isagz,t 6f*rg64aisy :dentical resistance,the battery is ideal and , 6y:rz i*gfst a4ga6sall 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 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 connectef7kzn:)hcuh-.co +o:*m uhn dv0ns - kd to an ideal battery. If bulb #-kn.)nhsnhd*kuo-: co+:cvz0 h u7m f2 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 ofr 1bwi8 1cltm2 the bulbs will not light? tm 8cl21birw1

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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 ammeba-luj7 prqo bp 39.9yter reading is initially I. The switch in the circuit then is cb9ry9uppl -a3bqjo .7 losed. 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 w3z6g*;qiia e x:r w2efour 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 circuit. Whi;e:63xww giqz2ar e *ich 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 sac-0 ho ybu:6fome resistance. The battery :cfob youh6- 0and wires 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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