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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 connected in th a-g b)z -ea; kwlvm.f(a 6i3n3mzra4ge electrical circuit .)-z4 -klva6(;w3g3fnzbam egmia ra 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 inyhqu; r:6bkr 2 the electrical circuit shown in the accomp yr;bh2ukq6 :ranying 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 in the electrical z(3zv ynf93,d2 eosu,vlw f:ncircuit shown in the accompanyi 3y9nf3vzz,,lueo sd2(nwf:vng 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 i jppsg(ds n(6*h xb2(pn the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is (j ssnx(gpp*p(d6 hb2true?

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, hizd: /uwn45lvzt)4b are connected in a simple electrical nzhb 4tz5 w4uli):v/dcircuit 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 resistance of 10 ohms, armm4/ xm 2cp;7x i-uiaqe connected in a simple electrical circuit with a switch and a 10 volt battery as4u/;m2xixcpm 7i aqm - 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 andzjr (/gkeaj-j/zp p-8 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 that point. Which p z8-r-kajj/egp (jz /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 wire0zxp7 )u 6 2d psgi,txk :6r6sv)qxsio of negligible resistance is added to the circuit betwee ,6 go6it)uizx70s2 vpd q6xx) k:spsrn 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 shortl9 vr+d+ z5d*f- pp0, d/igm(mykz miting wire (no resistance) connects the poi(m+ym9m r*-/dpkdvplz5it+ 0i f, z gdnts labeled A and B, which of the numbered 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 coahs nb.8etmid:n:w76nnected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminsd:n7e wint 6:m.a 8hbating 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. safwz-/a9(x yq *abq 6n :+ijn 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 bulb #5,fjz-/aan n asqb:i+ *xy( w96q 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 showvcv1 c+:u pif6n, the three light bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices c:uic6fp vv +1correctly 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 p4z2 y4l,28nbkutmmpg) 0ytave identical resistance,the battery is ideal and all wire l)y44gpm0 ,nu ym2btza8kt2ps 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 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 kx g,.ic75)pozrr8 rw3h lpy/to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happ.g 3 yhiw/r zrkp8oxl57c),rpens 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,uqo4re.4 jer-u8. v m1 t(vsds which one of the bulbs will not light? tu mee(qso jrv8.v4uds1 .r-4

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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, thee ra0ax-42-uad :yogs: 3gork ammeter reading is initially I. The switch in the circuit then is closed. Conseq0gexay r-raao:k3dsg :-ou4 2uently:

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 ivau,rb5ba -qmm52 9exdentical resistance, all wires have zero resistance, and the battery is assumed to b9muabxe5, v rma25-qbe 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 thvzj)0 *q:vqul(itsb:89kp h udy,zl w3j 2p6bree lightbulbs have the same resistance. The battery and wires have no re2 k:u:ull0iqh)t6( qp wyj vbvd9z s pzj3*b8,sistance. 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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