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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 elkwwo 3-+qe)z vmj r;hs;bj3j c/t*n .pectrical circuit shown in the accompanying figure. In order of decreasing brightness (starting jr k;j v;q 3owj3-wh/z+ t)n.cs*pme bwith 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, an.eszsjcg98 ht e-5fa b nb,92/mvzhx5 d N are connected in the electrical circuit shown in the accompanying diagr 5vcj a2t8s s -bmb.5g,z exz9h/9hefnam. 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 Ns5 3x8*juuuhe are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following sseuu u*hj5x38tatements 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 arex9by .8ol 6gkx connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statl96.x goxkyb8 ements 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 br mgn5.t;4d( v s1siawulbs each, with a resistance of 10 ohms, are connected in a simple electrical ci5s4;gma(ts 1v.dw inr 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 resistah) k8p1z ysrr.nce of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the di) pkrzhs r1.y8agram 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 sh f:hf08qm)r2 i; sxmqwown has an ideal ammeter with zero resistance and four identical resistance light bm28: mq0h;xff r)qiswulbs 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 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 negligibl;m7 //./q /ongbdpchvo h 4vsle resistance is added to the circuit between points A and B. When this shortingg4/ qs .ooc vhlm/7vh /;nbdp/ 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 t ) yi xgtw4xoqhsq1q76*i3: yhhe points labeled A and B, which of theh:) oxiyqygx 43 hw6*stq71 qi 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 shn wo7pyks+ q4: 3 z6 o,4h09hzcmvcckbown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, whicch:3+ kym ko 4, cwp qn074cbzos69zvhh 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 gnu*cwxpk 9y8/ zn*.x are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . Whenkyn8c**9 . xpwz gn/ux 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 have idi.9f7d ok-oz wentical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choicesdo7o.k 9w-zf i 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 +x.2f(jiat n pidentical 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 what happens to the magnitude of the current at the point labeled P fp+a2 xnj(.i tand 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 h1l 0 hv5ko3ew9will akb1mx7)as 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to th7xw iv eolkb115 )ahw0llk93m e 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 circu vrzl39./ hx*egzel t.1) wsc4gk vhu/it diagram, which one of the bulbs will not light? utgslv.1 ek z)*g4l v3/x crz.w9heh/

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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 am8 t6efbk c4q8w okx90ymeter reading is initially I. The switch in the circuit then is closed. Consequentxqo0 6w8b 4 y8cekkt9fly:

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 fo9m f( gv.m;m,xfq ef1mur 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 circ;1g.(vmqff ,fe 9mmxmuit 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 th l mmcp)p+u:igwq- j)d9i;1zre same resistance. The battery and wires have no 1rmuqil)w+: d )pj;g-mpi9 cz 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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