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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 eu//( n hvt -ebo9.e40oiscqda lectrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), the h a/od scbi40/ -.qo9nte(vuebulbs 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 electriczm *l 4 4.woe i+8t(mtvozk9cpal circuit shown in the accompanying diagram. Rank the current through micoz4*mzv.lk9(ow+tt4 e p 8 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 elecg8qj+,i :6/glr vibja trical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statj8bga :ljiq/,6rgiv + ements 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 lightbulbsm77y)ebm o r/x K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out xorb/y7 )emm7. 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 m+ss,.ustyf1j8rb r 5c3bi35oc6ivg a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as sh f,scm1i it rgro5v .+ys bj365bs8uc3own 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, wi54tusle7 ubw qiek. .0th a resistance of 10 ohms, are connected in a simple electrical circub . 704ukeseu.twq li5it 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 ammeter with zero resistance and four cr jlg/1to:kl0c 2a7xxiptqw/et ( ..qx2o/y identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking th.tj2gi/ 2lrc:(o0qxy/x/tao.kpxte q 1w7lce 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 circukx0s,c v/f;b oit shown, 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 ideb,0kvfxc/; so ntical) 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 shorti9duw )a4ufq2 ;y s h)mjrdf+j*ng wire (no resistance) connects the poinjaf;dsyd)fwur*j)h+ mu9q2 4ts labeled A and B, which of the 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 lightbulbgkbtiq 1n j)7+.m tru5s are identical. When the switch in the circuit is closed illuminating bulb #4, wikq1t5mg ) 7br nutj.+hich 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 ci1lz hp+fjmy 6(qsa89 rrcuit as shown. All wires are ideal with no resistanc6a+8 9q(srlmfy1 zjhp e, and the ideal battery has emf ξ . When the switch 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 ligh-g(oni( s eb+zt bulbs have identical resistance, the batts-+no(zge ib (ery 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 four lightbulbs have g6/,,2q v2x v ojhfh. wuxp-ieidentical 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 tv hex2.vgq/6pwfjxu,i2-o, hhe 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 c3zpoigw bxn373or x/ 9 1yw3xeonnected to an ideal battery. I3b/yne3gxpx3o19r3 7io xw z wf bulb #2 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 9cc 65t po9nwnof the bulbs will not light? 99cow6cn5 tp n

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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. The slpiz 8t6w-yg7 witch in the circuit then is closed. wg pt-iz 76yl8Consequently:

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 resist);odi+97 h fwwnblc-cance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the switch, S, in the circuit is cldon-97+hb )w;iccw flosed, 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 have th lm;bvikrpp+efak5*,f l *gv 5+,m5jte same resistance. The battery and wires have no resistance. What is the proper ranking of the bk+ m5fekf,; pil mv* +*5jbrap 5tvgl,ulbs’ 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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