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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 lightbulbs5j1o zd gzz:u , 7(az4xcq5oaf K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the briz1 5zo,o dxzz5ac7g:4 auf(jqghtest), 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 ele7l4 ycy xm3l1f3bk-x: rsncb5ctrical circuit shown in -x5r3cnkslb1lb7fx c my4y3:the accompanying 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 lightbulbs K, L, M, and N are coeq6n g1wh/l) gb)in7g nnected in the electrical circuit shown in the accompanying figure. 1lgein / h g6wg))b7nqBulb 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 connecte 2(ouy dl/rr-kd in the electrical circuit shown in the accompanying figure. Bulb K burns out. W2( ylo/rd-ruk hich 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 10 ohms, ar-8um0yvc2ew umz 87 cue connected in a simple electrical circuit with a switucz2- emucu7y 08 w8mvch 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 5b.,6 tt o5) ,agnecpyp3ggbb bulbs each, with a resistance of 10 ohms, are connected in a simplbgt,g55 bb)pne y a6.c ,tpo3ge electrical 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 an ideal ammeter with zero resistance and viegt- ub .11g/ak,ry four identical 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 /,r 1aug.g-i1tb ykevcircuit 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 otdf+ 2k8(hlu s. frw8bf negligible resistance is added to the circuit between pointh t28+8kfu l.wsd(rb fs 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 resistance) connects th ,ykp9 yffc5fg0wr6 (ee points labeled A and B, which of th(wk yrp0f ffg, cy5e96e 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 sh-a- m- uk82yvz6ru jidentical. When the switch in the circuit is closed illuminating bulb #4, which otazjumk u-rv 2 s6-y-h8her 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 connut0,yrzms( *tt +2 oofected into a circuit as shown. All wires are ideal with no resistance, and the ideal bf0t,sytr z2o+ oum(t *attery 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 hav ops4i ( p01cj+ywz:voe identical resistance, the batteryo4+1 ijp0o(wy z:vsc p 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 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, t0:v;jkqc mu*j l(- qrix,k2x mhe four lightbulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, wh,jx-km 0v*um qrk( 2;xcjiql: ich 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 connected8f3m5st5 z3rf *ofaj1iji)dso;xw i8 to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb xi5otd88)jjaif5wr1 m 3zo *; ifsf3s#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 b cvt,2s8w-jxykb)ec; ulbs will not light? )x 2;ckbv-tjy s8cwe,

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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 ammew4i ogwmm08e+oh+ 0l d;g bg5eter reading is initially I. The switch in the circuit e w0ho50d8gob+;mglgm+ ewi4then 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 sh352uw6l luq zhown, 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 a5 uwl63lhq2z udded 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 shown6p;fzapv m :g6 mbue+nr. m6+jk7e+kx, all three lightbulbs have the same resistance. The battery and wires have no resistance. What 6 nm:jvz ;ue+kp+fpa.bm +re67k 6mx gis 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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