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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: 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 Kws b p4*yd+lzf 9l1pyast182-v vqz/g, L, M, and N are connected in the electrical circuit shown in the accompanying figurealdfvb*s 2 1tysqwyv 1/9+4gzp8lp-z . 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 nyo 7ppe5066eb+qkov lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the cyqo 6o06p5+ke7pbne vurrent 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 jd0cc brao7t1/4 yju/d( l2v0qywhn6u.on5r are connected in the electrical circuit shown int42d0v/oqd bw7yuj65 o a 1u/cnc0h( .yr rjln the accompanying 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 connected inffa mv8x1b hy*l3c75x the electrical circuit shown in the accompanying figure. Bulb m5lxxf 1vc b f*y37h8aK 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 ez f *ka.kb6u5bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit witzeb k *6.afu5kh 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 bulbl 0r5d*ojpk f8s each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery a d8frop*0kl 5js 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 fo3 e/*3d kxpgw azo2.b54npoqcur identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking tpn w5qg4/.ko3 3adc bo2p*zxe he 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 shvy(u,2a sk :vyu :t6bqown, 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 identical) in the ci:v ,bak:2u( t6uyvyqsrcuit 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, 3y j 3:k-+jeey .qoe:jn2oshv when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighterej-e. :jn:ok 2sy3oyj v+he3q? 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 codc 90il* .-k/pygsded3m1xvs u fa n;.nnected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which*i.dgy.maev;u3 kf0x-9 pc1s ds/lnd 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 wnj*n0nc +x +h.b6dql.o mgo7 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 closed, aside hn7om+l*c x6g0+nj.on b.q d wfrom 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 identigtbrdx5btn hk 9w w8(d 4jo;+ky6u( o+cal resistance, the battery is ideal, and all wires hakb9b+jw((6 g 5o;rxkthtudy + onwd8 4ve 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 sho)bakzub x42o3 wn, the four lightbulbs 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 current at the point labeled P and to the magnitude of the potential dxzb )ub3ko4 2aifference 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 aho/x)ytv x,v:xlnuwa3v w,a , w+05ka n ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and frovwxwxw, yxt,ov/)av ak l5n3h u:, +a0m 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, whiipa v ad;v,77xch one of the bulbs will not light? pad xvva7i 7,;

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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. The2wir7 m9ialj,gqz r1 8 switch in the circuit tiqw9z7j lr1,8 rag2mihen is closed. Consequently:

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, theo+jwfj)1 b bty69w zwq;/v)hw four light bulbs have identical resistance, all wires have zero resistanc h+9j)y;wb wq1wfzj/wobt )v 6e, 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 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 thre )z vmxrrr hd,e.m:p3:e lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightn3z,x:hr pre:mvr d.m) ess?

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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