Combine Problems - 无忧得胜-网上国际课程 (5edu.win)

?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 in the elecck*;t 34d cj9t l(re 1abg e4ld,mw0votrical circuit shown in the accompanyal(db 4gd t rk,0cj;v4cet*9o ewm13l ing 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,z3: p4q uj 7qckwp903o nj:1npg6hxau L, M, and N are connected in the electrical circuit shown in the accompanying diagramapn g ko :nxzjqqc4p17:6 u0u3hp93wj. 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 electr0(:xf ta. couu.w5e jcical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statemo cew :x j(5fca.uu.t0ents 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 lightbulbh kh sx8(e1n/n4wn1ans K, L, M, and N are connected in the electrical circuit shown in the ac/xwn(n ank he41h18ns companying 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 ezx (,2t5ru6ilhe snn5ach, with a resistance of 10 ohms, are connected in a simple electrical circuit with a ts5i eh 5urx2nz,(6nl 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 li-b49tt ips1 h n7gwum-ci h4+ight bulbs each, with a resistance of 10 ohms, are connected in a simple 914 pugt n it-mw-h7 hic+si4belectrical circuit 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 ai(k -9g v8xlic6cyr(bn ideal ammeter with zero resistance and four identical -v gbr(lx(86cikc9yi 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 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 shortinh5sj ).)xxy ppukl8 n*g wire of negligible resistance is added to the circuit between points A and B. When hku.)y jp l8p)*xnsx5 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 shorting wire (no resistance) connects 2cnxv*6ll6q 7h lb4d 6(i-4gfsu ummp the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that q4xfm nv p76hsiuc lg664 lm*b(uld-2all 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 liohp.ua z :wld0c+5rxvy5y: 1yghtbulbs are identical. When the switch inru0z .c5h1dlayx:5 :ywo + vyp the 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 bulbs are connec6x(gk q1e m xt)rs:7ryy8qqm-:lkx xe 4shl-)ted 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, asiyyt:-))sx m-lm17k(lx x r4qxs:hrq gk8ee6qde 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 identikob2w atd7cup; bi0,9 cal resistance, the battery is ideal, and all wires have no resis 2bti9u7o0a w;pc,k bdtance. 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 havjjnq,8c/ga-r4xp e f8 e 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 point labeled P and to the magnitude of thrc4q fpx8gejna / ,-8je 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 ideal battecway 11ms.y .ocbe8okd5r +0xh 5fdt*ry+soc0x*8e5 hfw kyomyrat5d .c1 1.bd. If bulb #2 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 circuit7z8 2sb0qzn55r3dlkrh:h 9,guo o g nm diagram, which one of the bulbs will not light? o2 ku3gn z q:r s b9n87md,zgh5r0hol5

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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, t/k qnp49bga9 sl(1 yvb:pmguilt41) yhe ammeter reading is initially I. The switch in the circuit then is closed. Consequent9bikp4(tn 1g )a y/b4lpv umy:gqs91l ly:

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 r *nslec8l6 f+/,q89 n x31gnpveatits esistance, 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 resistance is added into the circuit. Which of the light bulbs will be dimmer after the switch is closed/,1p vtsel* 9sa eqfcxnn 3igl+8 t68n?

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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 hav8p a*:bn3zrhff ox i2+1sy-ys e the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’pfszxn:i*osyb+y ar3f h8- 21 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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姓名:游客(未登录)

总分:18分及格:10.8分时间:不限时

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