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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 connrlee8x96a+zf1ab u ggzm+ 2 qw*7gzd4ected in the electrical circuit shown in the accompanyingeg7* g udz69b8 za+ mze4xga1+rwqfl2 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, ,ku/pu4f .fux M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the currentpuku, 4/.f uxf 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 tmuhag71ijcdv6*zh /-; gy+e xhe electrical circuit shown in the accompanying figurey/ gh xc6a ;-71hzigu*mv+dje . 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 :hjei7btf i gm(*(zxxef5**zN are connected in the electrical circuit shown in thex tz*e( f hm5i:ijf7(zxgb*e* accompanying figure. 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, withsp nzw6m3 h2p/*e-j1lqb7nr.dj l q9r a resistance of 10 ohms, are connected in a simple electrical circuit with a switch1n*rhrjb3pls lewz n927.- / 6dq qmpj 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 resistance of 10 ohms, are connecthl 3pry5,u97w,ntvtp asc( ( ted in a simple electrical circuit with a switch as7pvtrp9,3tunl(y5 (t c,h a wnd 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 resia+uih/o :5nqet ux)w3 8gvg2e stance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the electrical circuit at the)u qev/n 5g+ a:28u3wgioxt hat 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 shorkbrog:ibje, s1l x; c.;6qw/kt 7ts-kting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 g wxbcj ;,lt/r1kbit7es-kk g; .sqo:6oes 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 cxo4kr4vd:ar 1)ylv ks :-t o2shown, when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are:srvo12ckl4a ork:) 4t -dxyv 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 lightbulbs are identical. When thev637roo q4n 0vh:upv u switch in tpovn3r qv:7 4uhv o60uhe 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 bulbhiga38qv+vu p-s.e j1m6 uri5 s 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 from bu-mi5v.eqrp v hja s1g3iu+68ulb #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 s 4lg 02o;od+*dmkuwpohown, the three light bulbs have identical resistance, the battery2 ooum*d 0p+dgw ko4l; 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 ha q.fv sl/ ngbde wul-;/t75 (p)z3mlqpve 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 poi)nq.mlwe(vdpf5 l pu /tl3q;bz -7sg/ nt 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 comv9hv2 p ltv/6nnected to an ideal battery. If bulb #2 were removed leaving an open circuit there,vvt69m p lvh2/ 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 bu naj m57 v2umhd:h5u)el-quz)d+7x ialbs will not light? z)d2u+v:umx7)a jh5n-5 dlhqam7 ue i

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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 circuitqw mdz06*wog+ shown, the ammeter reading is initially I. The switch in the circuit then zmw*q 0od w6+gis 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, the four light bulbs have identical resistance, a+-kes2 gkt2z y(avp7m* ul1oc ll 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 ressp2 g*k (c-a1 vozu tl7e+ykm2istance 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 /f z/ldb3q4)e x8al.p xy(bnfshown, all three lightbulbs have the same resistance. Then ep4 lxf xy(z8)q/./fdl b3ba battery and wires 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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