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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 li w1w+.d +moo9vn vdih;j*u )zhghtbulbs K, L, M, and N are connected in the electrical 1*z hmd;hjod+wi +o9uw)v.nv circuit shown 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 identical lightbulbs K, L, M, and N are connected in t ;+lnqg 83s:g tl:w fwsg.8fxehe electrical circuit shown in the accompanying diagram. Rank the curr3w;g:g .swtgfnx:fe+ 8s8q l lent 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 Kmjdko 7 kqd kdik9+uv8w (:s/4:5esjm , L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the follo 7eudmmj vsjdk+ kk/ :k95dqi:w8s4(owing 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 lime124(ban kj2 doq+m sghtbulbs K, L, M, and N are connected in the electrical circuit shown in the accompaqok (2 2m4jne1dbs +manying 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 each, with a resistance of e1:huu+a+u )--ciku2 ptw5rt+ rf--y cqhdbj10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt batte1ytre-+uq- )2 pduh-i fch j:5 rbkaut+cu-+ wry 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 ofp:wv10p;(pn;;ux io9 b ex nof 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram belowvp;pb u;;01ew x(nxofi9 :nop.
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 showj e8te:kfl7s, km)r ms,/dc z m63n9mvn 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 socket thereby permanently breaking the lzdk,mm7mcr n,j eks9 ms)/ 3v:t86fe 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 s4tl2v.jbgz: ehorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. W lg:e.vb t2zj4hich 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 resof;t* yb2uiyy9fj s352*//tpgk r vtdistance) connects the points labeled A and B, which of the nurdu sj*t3gy ktyyp; f / *2fit29o/5vbmbered 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 identical. When thd ij h;3x9o:use switch in the circuit is closed illuminating bulb #4, which other bulb(s) also become h;i:d9xj 3uso 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 o 0tw:sjcdoib) u 4gx;d.pk/1 are connected into a circuit as shown. All wir )0i:xud.;sjpokc 41bd to/wges are ideal with no resistance, and the ideal battery has 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 identicphkcak(t(f4sd3g p 0 dka:np(m1 ;ni;al resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the light bulbs that ecdt 4kip0; gnp(3:f(m sa1kk;npha(dither 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, /cv8 v;1oi faathe four lightbulbs 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 of the current at the point labeled P and to the magnitude of 8oca iavfv/;1 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 bulb si;b09:9;mgir* xdf eof st+is connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to*t;o+fib0im9d:;xer gss9 if 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 p9s4ju57i q-h-plbg b diagram, which one of the bulbs will not light? 7-lbp ig5qjh 94bsp-u

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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 amme, xbk9 k/.u6;cum9cit.csh nu ter reading is initially I. The switch in the circuit then is closed. Consu. c/cum ix99hkcu.6, btks;n equently:

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 shl +zmrh x;0e+hown, the 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 the circuit is closed, a wire of zero resistance is added into the circuit. Which of z0 r +xme;lhh+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, allqn6-q 2 nswgo: three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of ns2wq6n-qog: 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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