Combine Problems - 无忧得胜-网上国际课程 (5edu.win)

?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,-3qobg1onx(o;p 3t )e e d1mk8d;cr rg M, and N are connected in the electrical circuit shown in thr tbdnd -3oo1q; r)ke8(c3 mg1gxp;eoe 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 au9 2smrz3-nc/j)+p fiq ig7k fre connected in the electrical circuit shown in the accompanying diag /ricjk9s2qmg7z 3nup+ f)-firam. 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(xc( q ox+mn,k, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statements is t,(n q +xm(xcokrue?

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 are conne ri*vrk2v1n4wwe j0pft+ oi.onb q/-2 cted in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the follo+wojb 0/r *i1ef2k. 4-tron i nwv2pqvwing 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 bulbs each, with a resistance of 10 ohms, a-7h 2 ttzk-g uats36hire connected in a simple electrical cirh ktut73--s t6hgi z2acuit 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 ez/*l.ys-76olxa5jy* 1;,z fdgm0ptx fqqah , with a resistance of 10 ohms, are connect g76qf5,t*y/lz- qs lapf z 0;ox.jdhya1xe *med in 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 ammeiy/-fsyj bq2r8 6c9z zter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socker/y8sjq-9ybf z 6iz2c t 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 circur*e5bx 3d1jxbit shown, a shorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is addd5 3* brejbx1xed, 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 (nobt,3.3pkhjinw fds*y+h0 + fg,i,kn l resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have resjk fd ,f p,kbh+g+ns3thi*w y.n3 i0l,istance 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 asp kambd :,6af- shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which otherf ampbdk:a,- 6 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 into a circuit as shown.l*(ugvo( sm:a xkv 3/u All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuit is closed, asiduv:v /*skm3u (goax (le 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 identical resid6bs6 / b)uvi-ycpg b2stance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the light bulbs that eitheib)svcp6 2bb u/- 6gydr 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 identical resiscmmv(jv,z 5m a-t.zv0m6 k7iytance,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 and to the magnitude of the v(-zivv56 t .j mmk,am c0mz7ypotential 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 bulbs connected to an ideat.; +k2us6g+ikx z,lhhyaj; ul battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and,s;u+aiyk 2thxzg j+u.l; h6k 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 wi:2ekafsj7k cq*n+h1lll not light? n*hk 1 q:sl+ jkae2f7c

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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 switce:di+f:3 d t21nd5yc:li cypq h in the circuit then is closed. Consequently1t:d f: ye 2n:ypdccli3i 5dq+:

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, th2l5fyu 2dz x4w2cdrk 7e four light bulbs have identical resistance, all wires have ze dyl 2cf25dxw7kuz42rro 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?

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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 lighecgvkh6 83 dyo.b+x dg6xh71utbulbs have the same resistance. Theuo6xd+.6kb7x cdg3e h8h v1gy battery and 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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姓名:游客(未登录)

总分:18分及格:10.8分时间:不限时

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