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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, M, and N are connected+jh/z;qoiy 1 *ge aotd 42ys5g in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with to5eisg1y * g at +4hjz/d2q;oyhe 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 in the eq/h *at3jj+ mgj uv.-pc3upa)9dcd)r lectrical circuit shown in the accompanyduv-rq p9*jjcjh.+/ gct)a p)d33 uaming 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 lignm o*j38q jlym,s44 w(/hrhvchtbulbs K, L, M, and N are connected in the electrical circui3js wc/m,v(mo8 jh 4yl*nh4qr t shown in 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 in the electric 8 92*x9q/uxn,aqmmy p.pqxaaal circuit shown in the accompanying figure. Bulb K burns out. Which u2mqpa9 x 8 ,9mxyxq/.p qa*naof 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, wi,dw1 1hsd 8ufm(i7ila th a resistance of 10 ohms, are connected in a simple electrical circuit s(1l1, m d7fdwau8hiiwith 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 o zhay9m63euj9f 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as show 9j6e amuy9hz3n 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 wp o42 eoaqtdj( e9kj,3ith zero resistance and four identical resistance light bulbs which are initially illuminated. A persot e j,2eo9qod3p4 k(ajn removes the bulb R4 from its socket 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 shorting wiiac/ u m0yjy:( 7elz+jre 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) ijy7aic:+l /u0(y mzj en 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 sp /lfcjpe7;pe n kb- :0+whxi-lqh38-v)wfd resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Asshw8:f- j s iblqekdl3-pf/xhn w+pv0e) p7c- ;ume 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 connected as shown. All lightbulbs are identical. Whenfh1ylrle;x +b6;t9k3bg jf k - the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also becomeel j 1-k tl9yf3 f+6r;;bxhgkb 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 /,.bwf/u7l, m dbouhemgzq5 5 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 /qo/be z5u wh7glmumd 5,b.f,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 circuitrnh*f 5ql;d ,r shown, the three light bulbs have identical resistance, the battery is ideal, and all wires have no resistance.nl; rf h5*,qdr 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 have identical resistance,thevg hf;(r6r 0qw5tvu1d battery is ideal and all wires have no res; t0 6rqu dv15frwg(hvistance. 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 to an idea,vfu h eqtp6y m*bz273l battery. If bulb #2p, 3 qfh726u*yvemztb were removed 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 diagr2j;k )*/ jj .es;*vu( kwiywujyny5lt am, which one of the bulbs will not light? j(jw2y*evk nl u.i s ;5ty/yk;u)wjj*

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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 rr4x3-52).enpdzy z4k: d ih fchton e:eading is initially I. The switch in the circuit then is closed. Consequentlry2 :dt ne)3 ef4z:4k5co-.di zxhnphy:

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 lik.g9x: a-(: er/pdss b7gqmwx* ikf. xght 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 wire of zero resikkswa: -*..p(/ggrxxbmsei f7xq :9dstance 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 sacqf3s7est om7f33)n b me resistance. The battery and wires have no resistance. What is the proper ranss3q3n 3c77f) tmfbeo king 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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总分:18分及格:10.8分时间:不限时

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