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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 connected in thw esfsat5av /g0m6t(fr *e.s (kkb2l/e electrical circuit shown in the accompanying figure. In order of decreasing bright wgme2sv6s05( st e. //rl fa*abtkf(kness (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 c3ynwi(.mq )oare connected in the electrical circuit shown in the accomiym nco)(w. q3panying 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, Mjn: e: d yo*h-v4-yvp0ek*x yk, and N are connected in the electrical circuit shown in the accompanying fey4jh xv y dp0*: y-ok*n:kve-igure. 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 lightbulbs K, L, M, andl09ul2 iit i,czu.dfx c zx643 N are connected in the electrical c09xdxi 3izu fclclt46zi2u, .ircuit 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 bulbkhrw- 0;z/g ars each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram bea0 g-kr;h/zwr low.
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 4*;oi 8kc lmdombw8/ kz8kz3gbulbs each, with a resistance of 10 ohms, are connected in a simpleb8 czmd /k3 8;g4izmowkl*ok8 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 ammeter with zer:xl;jb; j/:z ynrgla3 o 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 st:rn;al3y jljzbx:g; /atement 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 o ,oz ,e+zv82)yvx)gaz0txwh h f negligible resistance is added to the circuit between points A and B. When this shortzx) +2,zg)vx he 8 thow,0yvzaing 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 the wb (h9.:cnkywyn q;v9points labeled A and B, which of the numbered lightbunqvy9k:h wywb.(9 nc ;lbs 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 shown. All lightbulbs are identical. When the sjzo/ahqvlkwh k83ode2)3 8. u witch in the circuit is closed illuminating bulb #4, which other bulb(s) a) o2kjwd/. 8k vzahuqol383 helso 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 identical9t+tvg3 a6q guydhvo2c6b )1e light bulbs are connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battee+tdt31 a)v9bu62v6ygq hog cry 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 bulbs havnvzanqmn( / h1n8)djbl9:6 mje 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 becomvbj( q1 anm:m6j8nndl9 nz)/h e 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 identical resistance, w ,z(n9 aqtf5+vf9(.pyvjide2q: fuu 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 label:vqun,fu5evpj.(2 wtf i9qya(+ fd9zed 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 shop6u sm6ngcw 1;wn has 4 identical light bulbs connected to an ideal battery. If bulb #2 cwgn ;1u66 spmwere removed leaving 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, which one of the bulbs will wbmu j6;g4l)xwzq o s793lrj2not light? 4mr 6swz9 ) b jj;lw7gx23uolq

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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 showqlopie9 oc l vu(7t670jm8q5q ,dog6hn, the ammeter reading is initially I. The switch in the circuit then is closed. Consequenmvi 66c 8d j70o75guqhpt( lo,eq 9oqltly:

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 circuitpl1yof09;d 9jfyhp 1q3 a8fhp 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 closeo hpl9qdp9 j y 0p11hyffaf;83d?

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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 light v7)tpb+:5en k ;icakvbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brigb)a:7kv ni t+p;k5 ecvhtness?

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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