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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 lj/wmej-le 2b /l7g 51a1l nrcvxpztrp/ro6( 4ightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreazrj/w(n5pel/v1 ct par jg-7o r4m1 blx2le6/sing 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 connexly3 m.4hd 9lbxo-b2k cted in the electrical circuit shown in4x3 hkdlb.-9ymlb 2x o 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, and N are connected in the egg(mqicq 9z0. lectrical circuit shown in the accompanying figure. Buzq imc(9gq0g. lb 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 electri. ok*01bvuivm wt5w)ncal circuit shown in the accompanying vvmiot .w*u51w nk 0)bfigure. 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 a resistance of 10 ohms,5kq8d4ilwm8 us9; w wx are connected in a simple electrical circuit with a switch and a 10 voltk;lus m wix895q ww48d 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 ea1g5 g6 fw8* ummiclwj2ch, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in t85m6w 2 ljmwuic gf*1ghe 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 resi mihp9q 0 xw9hlb8:f*nstance and four identical resistance light bulbs which are initially illuminated. A person relq pnh9*b 8x:i0hw 9fmmoves 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, a shorting wipwph)e 5m9xz*q a o;ld06kd(vre of negligible resistance is added to the circuit between points A and B. When t e56pzp();dkl9wqav* d0m h oxhis 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 sho1:n (ha/ rbxn89*dpqsj bw6auwn, when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become bright :jb*9p aqxrusn(86w1a / hnbder? 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. i1j+nht04kk ao1foe9 All lightbulbs are identical. When the switch in the circuit is c9 ont110h fkjoak 4ei+losed 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 +wth - cdnb5+c- gha9qbulbs 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 in the circuit is clohh- +c-d+g bq tw9c5ansed, 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 bulz )1ukguujw + v62gtw(bs have identical resistance, the bw ku1gu()w+tg6j2 zuvattery 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 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 o9u1yjkobb t. i276jk four lightbulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the cirobik7j62yb.to1j ku 9 cuit 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 identi6,vm y v(sdo.8sc 09pmew8loy9xu5 ducal light bulbs connected to an ideal battery. If bulb #2 were remldceuov m yy8d.w69 9s08 om,v5usxp(oved 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 of the bulbs will not li7.g ,ovws q nej686slnght? n8s7lne6s6j,q. gow v

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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 reading is initially I. yhh7v fn,n/e8+lw cn 2The switch in the circuit then is closed. Consequently:f7,ehn2wn l8h /vy c+n

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 identice/8r41r e6uld 8om2iwc lc -ayal resistance, all wires have zero resistance, and the battery is assumed to be idealwl/edc4i8ra6 c lrym uo1e8-2 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 lightbp0m2;qx mdq*eqdj. w c4f7 (aqulbs have the same resistance. The battery and wires have ndw;0 *mcq. daq(jmfqxqp427 eo 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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