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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 if(-goomdf.agfn 8:ge 6t3idd 7)ql 4w n the electrical circuit shown in the accompanying figure. In ordf- 8e3)lfdmqwdag :doo g76 igf(4n.ter 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, anzt ,*4zykabm b1sx(wi ;r r08md N are connected in the electrical circuit shown in the accompanying diagram. Rank zr*r,kmm yi 10za (t 8;w4bxsbthe 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 ina sicf(4l)owvbv ;yb+ 4mi(qkf.c/6 x the electrical circuit shown in the accompanying figure. Bulb M burnv)( fi+yw/ bxm 4fc4.iksbca6lv( ;qos 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 in the elect iy.z w2jli(l-rical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements isi2zj (.lywil - 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,;c uqy ma*xvx3,) yz+n are connected in a simple electrical circuit with a switch and a ;*m+3)xacyz,n xvyqu10 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 resistan qqebit6wk2pe */v95r ce of 10 ohms, are connected in a simple electrical cire* wip qk952v6qteb/r cuit 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 ammet* k,0jer oqv1nv7koeq k,v7t(er with 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 electrical circuit at that point. Which statement is true of the circuit after removik qv7kto *ke,qnoj1e 0(,7v rvng 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 wirb/t ,fizuz+w6t( eu vi 0i)6i3iblss2e of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Whicb,iuf/lb)v0t6(siizs 2ui+wi t6 3e zh 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 resistance) conneciybzx9-.z2 uyre8etv-k;y+e ts the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resistanceyyyke- ie 2ez. bz+vtx98r;-u 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 cib:* iwyd24qy9 l7toe onnected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which otheiilw4y:b* q t2do7ey 9r 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 identica13fz/ ybr0tb-x l2vab l light bulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has01t b/-xl arzb3 vf2by 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 shown, the three light bulbs have idhi 40r;wvdk.tkgm1 8dld+(u qentical resistance, the battery is ideal, and all wires have no resistance. Which one of the f u+h;i8( qtvlkdgr wk4dd01.mollowing 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 lig 0;kbw;jszeuf )by8wm;m76 bmhtbulbs 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 o wwmj;k;s)b by;8mbfeu6mz 70f 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 9)oug 1kf m.u2nhx4qg light bulbs connected to an ideal battery. If bulb #2 were f )quugx n24.m1g9hkoremoved leaving an open circuit 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 bulbs will not ligfhjviio )*e q3tzb8i2vb,.o9ht? ve8* v23)9io hz .ibtj,ifobq

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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 swi tn;5c y+zlg2ytch in the circuit then is closed. Conclg 2yt5n+ y;zsequently:

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 l jg;r)6 iuzja/z *ou6might bulbs have 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 o iz6j;)r/m gjuz6u*awire 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 hav4 wig*,2rzpq dw )-euve the same resistance. The battery and wires have no resistance. What is the proper ranking of the bi e2 wwqg4-zv*p, )druulbs’ 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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