Combine Problems - 无忧得胜-网上国际课程 (5edu.win)

?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: 游客未登录开始时间: 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 ar zgxszi-3pn ksky+.h 3 u, m3kk:gx26je connected in the electrical circuit shown in the accompanyin jgsup2mn gx:3z63.khkxk +-3z syik,g 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 lightbulaayq-sfwhf -p y5c(vm,g w7*5bs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank thew(-a7fymph*fa55 cvgw s-yq, 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 ccmbw8 :hvc8fsc4.z; electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statements is tru cczv8m c;hbw.:sc8f4e?

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 electrin26xgg/,ih v, k1 cpumcal circuit shown in the accompanying figure.2vpm/1,xih,6 ug nckg 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, are convg* ;ov e nmclts7(m9m6(uso;nected in a simple electrical cme(cu 6t7gns9oovm; l; m*v (sircuit 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 lighda0v)tu+d .tr0um4 zc t bulbs each, with a resistance of 10 ohms, are connected in a 0+d4u) 0z ratmuc.dtv 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 shown has an ideal ammeter wiv-qiggxs/: mcb(: dwznj* 7t.th 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 elect ns x7g.-:bjg tcmz* :dw(v/qirical 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 wire of neg2/b nic73duiix.: vzu gq41 tfligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb czidq7b:v 21u 3ni.i /u gf4xt#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 (no 6*c s28ngt+lwf wf3 7fgrp, rpresistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all f r *8pp+ srt6n3g72 f,cfwglwfour 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 connccd;gofc. j9 l9rwi1 7ected as shown. All lightbulbs are identical. When the switch in the circui c;jdc c9o. w1gli9rf7t 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 as shown.ftwz2 *jxur ;/0mpo;, m7ivad All wires are ideal with no resistance, and the ideal bato 7;adizm;j2rw* m,tvup /f0xtery 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 showxvr2.5dlrr o9n, the three light bulbs have identical resistance, the battery is ideal, and a5. rvrdrx9o l2ll 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 yx1+i s1v k+pbl pjs61lightbulbs have identical 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 the cusvl 1+ xkpi1b1+y p6jsrrent 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 ljy7jb7420g: +f1 qciri lbanrbwje 6 8ight bulbs connected to an ideal battery. If bulb #2 were removed leaving an open qr07+ bfn 6i8rj:j1ibbwy ceg al427 jcircuit 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 swukq ,z9.o )q,pcft/s3 lz(nbulbs will not light? k t(/poussc. wn,),qqzz93fl

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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 initv9 m 0rlcq 2pxt6z5/u-r hwd6lially I. The switch in the circuit then is closed. Conseqzph6lm5tx -v9u w26c/r r0lqduently:

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 hr , jik0o;fjeel3 q9a4ave 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 ql,e k4r9o;j0e3f aji 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 same resistance. Thjrw5fu17t .ea u5yu5(l jq j4ge battery and wires have no resisjr5uu5 yfw1 jt 7q(l.a5geju 4tance. 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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总分:18分及格:10.8分时间:不限时

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