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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 lightbul*hc23 ; /yvxozwz oq. xb;8cfhbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order;q 8hcz zx2*hoocb;yw/fx. v3 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, anw9gt( o-m9vaj d N are connected in the electrical circuit shogtv9m (aw-9 jown in 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 rw/w.p7x wyfj i0-dvv ))c w3pin the electrical circuit shown in the accompw ) 07 )j-p3.vw/ xpywwrvidcfanying 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 N are cjqtq*s 2y e:;lonnected in the electrical circuit shown in the accompanying figure. Bejq:qt;y* 2lsulb 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, ar b+) qv(qq;lm: pn8xmve connected in a simple electrical cirmn; qpblx +mv8)(qvq :cuit with a switch and a 10 volt 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 each, with a resistancpkd9j+7 v2jpew igt d5*dp a25e of 10 ohms, are connected in a sjtgp7kev2w5d*pp5d i2ad j9 +imple 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 shqldbcw +69 m7be (8bhfown has an ideal ammeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the el bh97ec dwq+lmbf68(bectrical 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 pew)r ij.1-f e) i7fuzwire 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 identical) in pie i-reuzj7f1) ) .wfthe 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 p*d )vs 3skf1bthe points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all3 b)1fspv*sdk 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 asmvr3 cf lgyy,6l,krv(ap ,x 08 shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bull(, rc36yg8xrpvfv,lk ay,0 m b #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 circ. nqh3yxi 9z5zuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When tz.953 iqhnzyxhe 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 bulbs have ideb9fv j7 h dx*b.7/zxomntical 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 completely when the switch, S, in the circuitjz fb x*o dhvm97x/b.7 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 resx1-k7pfo- vw eistance,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 mavo-kp- x17f ewgnitude 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 u)n uuwk;(g5:nj5dgc u )rg2 )zl-ltt4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to tn )z 2ctk5g5u(-;lu uu lgdgn)wr)j :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, wh 5 v8ki .hdx(cicgx*0mmg6d) lich one of the bulbs will not light? g id6 (h0*ximc8.dg5klv cm) x

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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 av.a-os8( 5 ( mmfqamnammeter reading is initially I. The switch in the circuit then is closed. Consequen.fn58 aam- m( avq(smotly:

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 b; v;y7kkeb6 k, q1vzsnulbs 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. Which of the light bulbs will be dimmer after the swikv ;16sbqzk,ke7 yv;n tch 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 scjt ip5ex+8;i9b+ vecame resistance. The battery and wires iv;p 8xit+ e9ejc+c5bhave 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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