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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 identica1 2nsmv z2d nk/ w3ef4oky1m6nl lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), the bulbs arynd6fmw v34kon2z12nem1 s/k e:

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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, 9mfu2x /skv2k L, M, and N are connected in the electrical cirk2ms uf92v x/kcuit shown 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 the electzw+b1d4z9h-h41t xv 4hvd cw hrical circuit shown in the accompanying figure. Bulb M burnsv xzd+9 4h44wd 1ztv1hch -bhw 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 li:i 5oo+ld4aqq ghtbulbs K, L, M, and N are connected in the electrical cio4d +5ail:qo qrcuit 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 mp ra8c-0noqh4f,e h0bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt batter e0 qafncr 0-p8h,4ohmy 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, wit:sxlymb jp.)oi x64zdud v r1)7 gh8.wh a resistance of 10 ohms, are connected in a simple electrical c8gp ji.4 .)oh7umrbxszy1: d dxv6)wlircuit 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 i7hldma1p ;yg8x f /cu7deal ammeter 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 em l;ga uy/fc 8xd1p77hlectrical 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 negli n88r n0tjsqf9gible 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) in the circunqtr j ns8f890it 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 k(ph1 wip2dug2l1iz6nbafcq 88)i6dts the points labeled A and B, which of the numbered lightbulbs become bright1 a8dug62b ici wqhf z1ni6lpp2 dk)(8er? 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. 1ycu m4: /yybb w.fc;i*ge4exWhen the switch in the circuit is closed illuminating bulb #4, which other bulb(s/e*f m :4b4xyuc y1;eiy wgcb.) 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 sx1mxk- 6,7. 9ahuzasds;t tmwhown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuit is closed, aside from bulb #5, which of the ot. a9x dmswu1x;t7,tm -k szah6her 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,s*7p4fo bkdjkob42m 03jyx b3 the batter0 pjbjksdf3k27b m 4yo3o4b x*y is ideal, and 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 s;dg ;p7; xxml6/fjr fkhown, the four lightbulbs 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 c x;km;pf7;/ gxj l6rdfurrent 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 has 4 identical 5ea v3aazg5i5 +api/p:aby.9w i1uvh light bulbs connected to an ideal battery. If b a5 5av./ia1bpgpi +hau5aw v93:yeiz ulb #2 were 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 not ltgff,/3)vm i kight? imv3t/f, fgk)

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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 s+uj7ha8g skb l )oxt -863hjwphown, the ammeter reading is initially I. The switch in the circuit then is closed. Consequ xu+h ja7ojg )3l6pbk-8thws8ently:

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 l2s:dd/y6 vut uight bulbs have identical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the swit6dv/ t2su:yduch, 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 su 5ylm,vzwd etjtt,-.. m,hi)qqtj*/hown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the prop*tz-l,,t5mq/j. t vw,tyimd u).hjeq er 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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