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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 connect *axu6eugg i2l/0esakt an7bw5zz7 (; ed in the electrical circ zka7gl7t*aau6b2/ 5;0ign (x eue swzuit shown in the accompanying 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 connected izd)oelho5 h+8y1(x m;pa*x h sn the electrical circuit shown in the accompanying diagram. Rankeo1h8o )xhzd hx *5; s+a(lmpy 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 ttl(3-zm qz7is he electrical circuit shown in the accompanying figure. B7i z3lsz q-t(mulb 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 lrpj5brd+35xd ightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K b55pdjbx r +dr3urns 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, wi+(:intilk mmdhw:9) gth a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the di mt:inhlg9: kwid) m(+agram 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, with a resistance9ci 4bzc,c h:j of 10 ohms, are connected in a simple electrical circuit with a switch anc9b cjczi: 4h,d 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 -:rky;9u icl/xq(p ywand four identical resistance light bulbs which are initially illuminated. A person remox (y;/wq-ykli :rc9upves 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 sal y.-redi982yoyo,o5 r0wn t nbc0h 6hown, a shorting wire of negligible resistance is added to the circuit betwee0 6eo-nlhy yir cw0dyr2o o9.ta8, b5nn 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 shorting wire dlnnuv0pa4ftf1;(w9pz )s 1e (no resistance) connects the points labeled A and B, which of the dz)u;vnpn9 eaf1p1 4 0wtf(slnumbered 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 lightbulb+ v;;m.2mk6yrpf yotfitwkv) fg,: d2s are identical. When the switch in t y, ft+vg;6kvok.ydt:)rp 2 fwimmf ;2he circuit 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 arh srceg9y:,.5 ; pfh chukli+;e connected into a circuit as shown. All wires are ideal with no rek+ehchl5,pihr: f suy g ;c.;9sistance, 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 light bulb6zmjs t84ixfk1r6 gw ylrd*3,oq fj.)s have identical resistance, the battery 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 compl4 ym f*g6kfxlr8j,ow3)ri1 j6dz .tsqetely 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 identical resist/xp4wueh 2rtzsxw.lw;8(s8 d ance,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 point8.; 8rdx2wzwewl u px(4/sht s 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 anhh- ( (8wp8hbn wpymj9 ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the vol-p89jwhn(hpmy h wb8( tage 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 cidwoo gi l7zm 3d/:)m)0jde91fsk0 sfxrcuit diagram, which one of the bulbs will not light? di sfl: f0kgo) 3)j ozew1d 0dx7m/sm9

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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, theij u(xaqc04 4a ammeter reading is initially I. The switch in the circuit then is closed. Cox4(qac0 i4juansequently:

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 r*d/yf-yc,nw/v66czmz4 p x oqesistance, 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 resi fw/vx/pmo 4c y,d6q*y6cn-z zstance 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 thetf/ebu (k9 o)f same resistance. The battery and wir 9bktf /f()ueoes 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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