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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 K, L, uiu9p;o 1aetkl( ,wx1s cip27mzbf+:M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), +i2zwstk 7oixppcbm(9 lae,u; f :11u 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 connectep- iz.rzjqh(3d in the electrical circuit shown in the (3irpjh-zz q. 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 in the elecwhb3 vwpz :f)i: q(o)htrical circuit shown in the accompanying figure. Bulb M burns out. Which of t(h:o3)wvh: fpz) ibqw he 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 light gu 47:e;igredbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the followingg;4:uede r i7g 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 co.p9:;d vm/y z dar2ujtnnected in a simple electrical catr zvup.dj9my:d; / 2ircuit 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 bulbo +e(ud7ck*,vk ,dz mts each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in ,m ek+v*zcu,d(ok t7dthe 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 sho8xt n ujrj)oeb)*j,6e wn 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 sockjer6en)o j,8t u)xb *jet thereby permanently breaking the 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 shown, a shontas q6zmq:- 0rting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes om q0s6t-qn: zaut. 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 resistancn( /jf3-roeul avgu.:e) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and-ag. ol/3uenv r(jf:u 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 idew6p6(ylcb ca(3 y2 iws q9/mplntical. When the switch in the c9mp lp( y6ww6ys/q2ab i3cl(c ircuit 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 connectmwld 9wtd;,m 9utfz)/ed 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 circumt 9,mw)u/dz9 td;flwit 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 tiga 0v,4: 1yov45kzv hc j1ovbulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the1i,v4cgo1jtzy:45v k o vhav0 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 4uh(t vy 2ig810iv0r*cbd ujcve identical resistance,the battery is ideal and all wires have n14d i grt8ic hu2c0jvu0(*byvo 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 conv ,r2k ar)yj34efvhvoj.2 5 mknected to an ideal battery. If bulb #2 were removed leaving an open circuit there, whatj 43rrfv h.ok5)jv, a2 ym2vke 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 bulbs will not lightt 1t c*ftc(g3s? t1*f(tt 3sccg

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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. The switchuzt4,rk)pbwfb w8 52n w0/cq e in the circuit then ir48/tbuwk ef)wp ,0 bqn2wzc 5s 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 four1lgo2i 0 6kv3eb/tb .t+r pdjq light bulbs have identical resistance, all wires have zero resistance, and the battery i1/j2 .p6 t0dkgeivq+b 3obl trs 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 three lightbulbs have the same resista.8rzrm:75pbjy . c i.c-nuadlnce. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightn .yp.nibc- d. ruz5c: lm7jar8ess?

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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