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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 lightbulin/d u-y o fyh 1/s:d2m7hp*hfbs K, L, M, and N are connected in the electrical circuit shown in the of: um1 hdyy7h/2 dpfhsn /*-iaccompanying 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 th8turkf) 33jm ae electrical circuit shown in the accompanying diagram. Rank the curra) 8ktrfm33 juent 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 liqwp*hum 70y36p/tbcvm g. 1tbekw;j3ghtbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following stateywu1 . kmh7p;g3 p /twe* 6cjbm0t3vbqments 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 elect6m6occx( v;cw(4(tysf qb:q d rical circuit shown in the accompanying figure. Bulb K burns owq bdf:t6qcy6c s (4(;v(ocm xut. 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 +mr un :ps5,o 9m68trmiw:kc d.-lbxja resistance of 10 ohms, are connected in a simple electrical circuit with urw o-n8bm56ldijc9k :, rmxst m. :+pa 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, are conne+oql1dr w g) -f*8yglucted in a simple electrical circuit with a switch and a 10 volt battery as shown in the diaglg qwyr +8ogf1d*lu-) ram 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 .xsadct( r/ wi t8c1*qan 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 edtsar(iq . cxt*1c/ 8wlectrical 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 wire of negligible resist3z, sa2iuic., zk(b ob+sre lev1/i ,tance is added to s.vlce+oi, et i,z/i 2zr,(a1b3ksub the circuit between points A and B. When 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 reso w 382bzm,g /ymkx4hhistance) connects the points labehomk 32ywg/z bx4 8hm,led 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 show :9d/; o c:rr28nosbkt gdix5wn. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, n/d:ow;ogki tbx2:8s9 d crr5which 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 connectr gbqr.jp,: l)46yg+xfkn9 ws 3gmu*adv ea05 ed into a circuit as shown. All wires are ideal with no resistance, and the idea.b *uk 6,s94 jm) rf0gw r+d:a5lgvpx 3yangeql 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 identical resv.3 yi fz46zwmistance, the battery is ideal, and all wires have no resifz3.4y im6vwzstance. 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 ident c3 g //l,aurmae87ljz wx 4z8ctxj0u/ical resistance,the battery isx ajj zc/4/7z lger, x 80au/u8mwclt3 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 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 ideakczo8 z zlt26j/4uu/ vl battery. If bulb #2 were removed leaving an open circz/vz6kuc u j4otl28 /zuit 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 no-hk i2s z:b5x2dms4q gt light? mz 25ig- 2xbh:ds sk4q

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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 jlm5m mmvf+z2h 1k npwa0 9e.20i h/vnswitch in the circuit then is closed. Consequentlymez5njhiv2m0vl 0km 1n9fp /.a+wmh2 :

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 shx0+- w 5sam0ufzyx8blown, 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 izu+ 0y lxa 0x-5mw8sbfnto 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 same re kv:7jewm4w 0p *;optesistance. The battery and wirekj:wotm 7pp *we0v 4e;s have no resistance. What is the 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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