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, M, and N are connected ikc l/*swdn;bdtiyc: e0d4+u/2a dj f/ n the electrical circuit shown in the accompanying figure. In order of decreasing brightness (startindty/ wked d40nibdf/;csau *j/:2+cl g 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 connected in the e ylq/g:xa3 qjcgrk50c. 2 r7p eks.w1ylectrical circuit showc.ggqrer1 5 wsa.3jkpl 07kyqx: c2 /yn in the accompanying 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 x- /e23dt blylm,hm+uthe electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statemenymx-hel/mu2 ,+t db3l ts 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, anirus raavu tw0a18 9ne6z **.od N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statemeu 6 to9s8a.riw*vz*euanar0 1nts 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, b0qowumd,:d , ;0m1s3kmlollare connected in a simple electrical circuit withb: qolw 1 ,m old3ldksu0mm0,; 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, /:kacm6io+oga3cf 3 y with a resistance of 10 ohms, are connected in a simple electri:o3ci ac+/foa6ym3gk cal 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 zero resistance ao50m2(n)ql /fw d5 jkpl 6jnrlicw*m+nd four identical resistance light bulbs which are initially illuminatedrkl6jlif +5lwd)0nc* w(25/j q opn mm. 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)hy e/+f6hjb9 8dolfk wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbs (all identical) +j6y bhe)/hf8l9okd f 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) connec,t7 lb 2nq4sh0ek vf.kts the po.7feq 2nhbk40v,t slkints labeled A and B, which of the 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 t- ih,t(mtmml*u1;mz as shown. All lightbulbs are identical. When the switch in the circm*t(l-,tm mui1;m zthuit is 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 into a circuit ifcgv le +(),s zi-2jyas shown. All wires are ideal with no resistance, and the ideal batteejiis v)(,z+ flc g2-yry 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 have identical resistance/28/e u7il-p1 rrz;ol brblzc, the battery is ideal, and all wires have no resistance. Which one of the followc-1/lu;zp brli 2 /zlrb8re7oing 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 liggmt)j d: es29bhtbulbs 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 what happens to the magnitude of the current at the point labe9 2td:jegsm)b led 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 hb .w8te+n5m rhas 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leavn +rm. b8e5twhing 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 v9wqz f48bi.m 6t0uganot light? 0iv9 8a4z6 umfqb.twg

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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. Th,p s2,xok) ilje switch in the circuit then is closed.i x pk2j,o,)ls 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 identical0;gu s9n w1029ugebozs l 1ytb 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 will1tn 9 0os912gbsbegu0w zuy;l 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 thiq 369v6 8gi)i:+b3 qohv fon.kivts je same resistance. The battery and wires have no resistance. What is 6t vk:iq8von )6v+ij 33g.fqhoi9b isthe 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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