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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 thegzn 9-suos- n2d9ar5 uub w9a: electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting wns9gu:s-a9 2ua5 zor9u-bwdn ith 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 connectedejhr yu*jki q148l)ef y)3r 00 tgrsbt 69atb: in the electrical circuit shown in the accompanying diagram. Rank the currejrbyfgrb0qku r:3hyi l te8e40j 1as9 )t)6t *nt 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 ligh2b rtyqo bg9/+tbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the follo2rb qg/+bt9 oywing 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 lightbulbkm t6/d /cifd,s K, L, M, and N are connected in the electrical circuit sh m/dtd ckif6/,own 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 bulbs each, with a resistance of 10 ohfwrtfv+6 + fhw1ku3w 4cs6i 4xms, are connected in a simple electrical circuit with4kwf+ 4sf6+hw 16tcriv xwfu3 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,:fm f5,klo8 mbtaizj1uc b ;z (-jm8w9 with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in -z izf8 ukjt(mf;ab1w9lc5,o mb8m:j 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 ammeaw yq4o8fm7w nve jt2)+q2ch) ter 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 after rewjw)vfq+ec24qh)n2my8ta 7o moving 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 resistance is added 29dvld qyv;w6;i7b5dvaj8yh to dw;qy 75ha;v vj6i89 ddlbvy 2the circuit between points A and B. When this shorting 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 (nok2s /+gaj4 rax resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume tarxks 2j+ag/4 hat 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 idenzq0 1hhy6u ) z,slz9rrtical. When the switch in the circuit is closed illumi1zz ylr0,)h9quh 6 zsrnating 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 identicak64)ctk b2fe wl light 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 clok2cf4 6k )twbesed, 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 buc+ex:dx k j vl1v.x2jn;a,gc1 lbs have identical resistance, the battery is ideal, andx;,xvlakj 1cc.: + x12gjvned 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, th8bt hmfs6 8c o(xp0u20gu-/cm l2cyz ce four lightbulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch, S f/u- pxcsy8m6(hgl0 zbcct2mo2c8u0, 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 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 has9pst6r -9qw2w lury9o 4 identical light bulbs connected to an ideal battery. If bulb #2 were remov9 9y2 prswor l-q9twu6ed 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 circuog:e:a(n 4sj cit diagram, which one of the bulbs will not light? jges(:n c4o:a

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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 switrkc-)x3qwa1xt ,)d mb ch in the circuit then )kqx ,1 )tdbax3 cmw-ris closed. 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,2b4oc-k e*kcs 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 circuits42cc ek*k bo- 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 28y a b3um3bkth3vkfx), c0pgshown, all three lightbulbs have the same resistance. The battery and wires have no resistancegb0tc32mkxbp8) v, uk3ha3f y . 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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