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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, an *;*e(,b adjhhgbk c2mbqi (e(d N are connected in the electrical circuit shob khgbib;(e(* chqm2d( *j,ea wn 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 identica01tmz5kyvr u 9exn95tl lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the curretkx9y5u1m rte9nz v05 nt 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,;q t6t8zjvo8pheb *aup s(;7d M, and N are connected in the electrical circuit shown in the acc* 78s6 qh;zbdp t;o(atvpe8juompanying 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 identicalu).e q6xxqy-g lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the fox x)6qu.gyq-e llowing 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 ohvb 9 yn-hlskfx(1jy83 ms, are connected in a simple elect8xfnjlykbs-3(1hv 9 yrical circuit 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, iwnj:g dgjm80 5i:b z1are connected in a simple electrical cir :igj: j08dzi 1wgbnm5cuit 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 ammeter with ze9hd6 r* r a*d5f;ppfnb16 lrbero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanebf r*dp b6fr6* 5 h9pr1adl;enntly 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 shownkp :3fqd.g4b m, a shorting wire 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) in the cirf.3mdk 4q :pbgcuit 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 shortinm1ma0- *7mjte9)o jpcxlf f0sx1cny. g wire (no resistance) connects the p0f x.0mc79a 1s1)nxjcm-fe*o jyp tlmoints 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 connected as shown. All lightbulbs are idenv15 y evwqn4o+f1 +uhx+y a1pjtical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also become brighter? +xnfe +1y+h qv15javp1 w 4yuo

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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 bzc+vlrny5sk4-b:. vb ulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery ha5zyvbnl.bv4 c:+ sk- rs 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 identical resistanceewj0uaktr+ cud *85xwtog:xvce 895+ 6im4fv , the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the light bulbs that either become dimmer or go out completely when t9 c+:+ix5tvtu w*ef a8 kv5wrog 4d0xjecu68mhe 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,the nv(0) 62 jt0ieyehoaj 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 happ) oaj(06eynj0ihe t2 vens 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 idealpskwe5 /x-vt0mm5i.u battery. If bulb #2 were removed leaving an open circuit there, what happens to ksm5 imtwp0-u5v/e.x 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 livpol5w9-e. vuogw65g5utj ajw, ,/wmght? /wgjg95vvpjm,l ,. ww 56 u5- toweoua

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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 ammetb z,3duk/n59 5li s0hmfvc tg7er reading is initially I. The switch in the circuit thfsg0k /mhi cvz5dtn b lu73,59en is 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, t*:/ur8 indgu phe four light 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 th/upu8 gdi*r n:e 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 thri;sh4/ejo f :oee lightbulbs have the same resistance. The battery and wires have no resistance. What is the :ooi sjhe4;f/ 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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