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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 lidynvwsp- *f3 .z*e*gbww7v1d ghtbulbs K, L, M, and N are connected in the electrical circu d**sv -bngzdwyvp.3ww fe17* it 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 arvh wdie9 x+a;46 fcvhe1x8 sr,e connected in the electrical circuit shown in the accompanying diagram. Rank the current throu+;xsfdcv8 9 ha 4ewei1rx, 6vhgh 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 identical0pz vs)ss4u, z lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statements is true? s us)40zsvpz,

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 o; cc9*)z-oowdod ab;v2g1su, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following w)o 9 o -2b;doocdsu1;cgaz*v 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 w7p c iq7ksi933x8mbtau0 2yibulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a s7k3i80buwi 7p sqm ai3ty9c2xwitch 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,9 0zba)syby:n are connected in a simple electricaln )by0zby:sa 9 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 a6zquf3-0j nrz0ejr7 wmmeter 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 electrical circuit at that point. Which statement is true of the cir r-00z z6f3wjujn req7cuit 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 wio.z rwxs( 1soj o-7q/kre of negligible resistance is added to the circuit between points A and B. Whjsz1kroow(oqx/.-s 7 en 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,d5rd p 9xow4l; when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are ideopx;dwr l45 9dntical 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 lightbule-zrk;wa,0+y*v mfh,m0peto(am cv . bs are identical. When the switch in the circuit i,c0hyam eoat.e wm, -(0+zvpvmfr*;k s 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 i rw4yt784)ydl4osqb onto a circuit as shown. All wires are ideal with no resistance, and the ideal battert4ol4ry ybdo sqw784)y 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 bubfqmus17pgz h r2k9)y- *b(f jlbs have 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 b)umg(s2pz9 jkbrfqhy -7 *1for 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 four1p 4rgzjv 5 vrqie;r)- 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 -1rrz i;v5jeg 4q)rpv 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 bu*.9fxfuv q. vbr+i8fjlbs connected to an ideal battery. If bulb #2 were removed +f 8.v9vu ifjxf.*qrbleaving an open circuit 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, -1wbsif del8-jk2x ;mwhich one of the bulbs will not light? - s; wxedmf1ilb8k j2-

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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 ammearw4v)z7ah1 lm c-6tmn /t7 jyter reading is initially I. The switch in the circuit then it/l7zyc )7m4rtnawm 6-ahv1 js 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 shown, the four light bulbs have id0ds:p oo9v h+ventical 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 wv+9o:p sohv d0ire 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 w cd;9xedy 25cje/z;gshown, all three lightbulbs have the same resistance. The battery andwjz/x5 dyced2 e;9;gc 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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