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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

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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 el k,2 :osf.znktectrical circuit shown in the ac.f:,os zk2 ntkcompanying figure. In order of decreasing brightness (starting with the brightest), the bulbs are:

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

98.27: Four identical light ;c gkt3q, zshc8whr+.bulbs K, L, M, and N are connected in the electrical circuit shown i hzr,c+8hwc.3k tg; qsn the accompanying diagram. Rank the current through the bulbs.

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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 in the e2 z ffj4 v feqoy54hej.i53x2slectrical circuit shown in the accompanying figure. Bulb M burns out. Which of the f5.x feeh o24j42q ys5 vff3jziollowing 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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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 ar72v,yh7 waqsm x(rg;n,x3o0t/z yj qje connected in the electrical circuit shown in thex,(jw;v /o2mhzsjx7t0q ayn3gy7rq , 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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单选题 ( 1.0 分) 切至整卷模式搜藏此题

01.21: Five identical light bulbs eachlbprn m7mcp 8 x(alwp(5a3,sef,m);h, with a resistance of 10 ohms, are connected in a simple electrica)appep( ;3sncwm5,(, m xamlhf7l rb 8l 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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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 ohmh bv f9gozy.65svw+;e g r87igs, are connected in a simple electrical circuit with a 6 bggz7 y w+.f5vsrgehv; i8o9switch 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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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 ry,*.+ji1 3vat y (mwc1gkiei0 umn sv4esistance and 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 cirmgjia(v,stu v.ii3y + ye0ncw*1m 1k4cuit 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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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 4ltfru4-.zpif3u 1x mgzf, u7 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 t zu m.ur-p7z,f3ft fi4gx4lu1he circuit brighten?

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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 thp-uqq k;c4xw p31f(nbe points labeled A and B, which of the numbered lightbulbs becomp cufb (kpq1 ;w4-qn3xe 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 ths.,z 3+ e llbbq3zaqm-e switch in the circuit is closed illuminating bulb #4, which other bulb(s) alsoe- mzbzl +blqsa.,3 q3 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/ d3 /x5ji,m.+ybc1yj i7xzq: rfiujc into a circuit as shown. All wires 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 brd.y f/uxczmy7icb: 3 15jrxi/ijj+q,ighten?

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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 ro0o: w:s/ge-*3vwchicb-z r r esistance, the battery is ideal, and all wires have no resis:bs:o/wew- r*gc 0zoc i-3hrv tance. 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, v+ivpr9;zw3m the four lightbulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch,v3i9p;mr+w zv 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 lighk jd1u.-idh l5t bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit th.-d 5lkh j1udiere, 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 followqyx4hd- c96bekx ta8)ing circuit diagram, which one of the bulbs will not light? 6t8x -qxy)hab9d 4cek

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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 switbi osg.*a 5k+we1g*yi ch in the circuit then is wkgio*ai +b *5g1.sy eclosed. 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, the four light yw s-gh v506 jer6ag4dbulbs 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 the light bulbs will be dimmer after the switch is closed?6dver wy6jsh g0-5ag 4

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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,y i)1ab 8gnp:g all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightnes) apgb:18ynigs?

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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