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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 lightbulbs K, L, M, and N are connesv 2ea:7 f*90w el alpomp9mn3cted in the electrical w a:9vm* 9mfl073enl p soae2pcircuit 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 are connecteddoawz7u:qc a 4j anlq y3u)*1lsa+x+/ in the electrical circuit shown in the accolu1o+qx*/y njd)3sq 7c:a zawa4 +ualmpanying 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 connected in the dkty9ki05qc) electrical ci cy9k0iqdk)t 5rcuit shown in the accompanying figure. Bulb 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 v: u- *ebxq 2ii0ze+l5)jl eldlightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is true?:e qi eve2+u-)l*0lzibjxd5 l

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 10vu8;p3peo*i*whigt+ 9t t1b n ohms, are connected in a simple electrical ci1nb* *v wgteoput93ith ;i8p+rcuit 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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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 o3 ecnz,tu.nzpc9c 7b, -u(w:u h9lajef 10 ohms, are connected ipc, 9z, t3a7nwcle. j (z-unhucu:e9b n a simple 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 am3l8ekwjg ;, ov q;;uuxmeter 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 circuit a g;x;8 qu ;oewkjvl,3ufter 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 res;z 5lchg dx,e;sgzo,4istance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbs (all ided;e l;czhx4gg so5,z,ntical) 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 resistaiuoma2 (2mw 5tnce) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resistan522 imauw(m otce 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 the sb2ic6*p r rkh db x68u8-c yo/(li5xtkwitch in the circuit is closed illuminating bulb ( 86-hl5krdx2b*xbcir/ up tkc8iyo6#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 lig z6b3 eljm95hdht bulbs are connected 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 lejmhdz 3b96 5#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 re2kv 3/wn w nb-;bu6gjxsistance, the battery is ideal, andnxw ;3wv6bg-ju /kn2b 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, the four lightbulbs have identicalw/r9 0o)ei j1+l,f5 momcpsvc 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 corm,0 jflmp/ w59vosc+) ci eo1rrectly 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 sxu5 qvt56 ,z d(hnxxt4b9 wh*yhown has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and frdz5nu9wh5t(xq 6bv yxt xh ,4*om 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 q y.qxt8i rq9)y1+2uuh qo3cathe bulbs will not light? 82cu i9ty q+uy.rqao)1q 3 qxh

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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 readin :ycme+)bu0n7u nmk6ey f3 9hgg is initially I. The switch in the circuit then is closed. Consequene3ky m: gyuh9) b+0nc7nm 6feutly:

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 circuithhk+ qyg m05f 5)m; kjf5fu)mx shown, 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 into the circuit. Which of the light bulbs will be dimmer after the switch is close5 m5g h+mqmfy hfk0;fu5xkj))d?

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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 nw- li m.l7x1sshown, all three lightbulbs have the same resistance. The battery and wires haw sll.xm-7i n1ve 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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