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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 lightbulbs K, L, M, and N are connected in the electricallob/tyv.4bq gka- x)j)qx+3bf n2 z(i circuit shown in the accom)(na )bx b2.o+-yk/qlbxqif v34gtzj panying 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 arelrr ey hp84i1( connected in the electrical circuit shown in the accompanying d 1y(per4i lhr8iagram. 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 i1 iz nhcs1 td)5wwm s0av;9zg0n the electrical circuit shown in the accompanying figure. Bulb M burns t;d 0i1vwns a1)9c0 wzs5z hgmout. 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 connected in the electrik 0fg-lqk2db 8 d2uhm:cal circug bul k0hd8dkm22:-q fit shown in the accompanying 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 resistanc, s 6jve 9n/a.x(8tihfd-tkbse of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volkaxf/d.si,vbh6(snt e -9t 8j t 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 lightfit a505a9 ikg bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shogai95i f 5kt0awn 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 andrp n;fslxvla .+3/s1g four identical resistance light bulbs which are initially illuminated. A person r.nx +sp;lg1 fa3/lrsvemoves 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 shorting wire of negligible resistancer o(h -b)s)pfe *6rjcs is added to the circuit between points A andr)eo*c f6hbs(p j-s) r 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 shown6if(d 9qxz ad4 83kg2n5pjkxa, when a shorting wire (no resistance) connects the poix pi(639j 5fqz2nxadk48dg kants 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 sho1w)ddm+d 0hrw wn. All lightbulbs are identical. When the switch in the circuir)0m+ 1dd whwdt 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 connected into a circw sueg2v td2 m s/aepptm9d38wdj*s6c * fs,.4uit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuit is cle.dp fdcsst9w 83 u2jss g2pm 6,m tw*vea*4d/osed, 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 havemf.l,2ler wd / identical resistance, 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 the switch, S, in temrl 2/d.f, lwhe 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,thm u.l3nax /y yhd569uee b yn3umah l/d9u6y5 .xeattery 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 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 cz1 q:,dqu 5ih bfcda:8onnected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what hap:uf1q:,z dib 8cqdha5pens 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 diaupo3:vy m h1g;jp2qu )gram, which one of the bulbs will not light? ;yp3p1 ugv) h2:jqmou

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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 Icc fbml1cu (a2oy,i cp3bgr pn4u-:;/. The switch in the circuit then is closed. Consequentl f:,rpcp u /o-;314u2bcb clcain( gymy:

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 m :4:j/li(cd*mhxqp d light bulbs have identical resistance, all wires have zero resistance,:mxq(p j:lmicd / 4*dh 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?

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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,+*o ( kyx;vkjepxsj mg:-(nj resistance. The battery and k,e;+xgn (yx:j-jskp( * ovjm wires 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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总分:18分及格:10.8分时间:不限时

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