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 lt .utt::0k5p3dhd vt5qys7 klightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness:: s05ddlv. p7kthq3utkty5t (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 lightb:r;kpxw 9yz )vulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Ra; :pykw )r9xvznk 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 fpvafod( 2g(6i. y mm6the electrical circuit shown in the accompanying figurpfi2fo. mymg66 a ((vde. 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 lightbulbskaa s0lx5*al +j i23n1hy6kij K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the follj ljnl* + iyhsa1 ak352aix6k0owing 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 /t)p y8ldz j0tn7pdr1 light bulbs 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 bepddy)zjt87 /t n0r1pllow.
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, with a res*(m 4d fyphg1h7 pfm5lo,n1i listance of 10 ohms, are connected in 7mfg*4(1pim 1f ph5lod,nyh la 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 ammeter with zero resistance and bmi t,r:1af 4m5jlxs( four identical resistance light bulbs which are initially illum: rt1fjsba( 45im,lxminated. 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 wii13dp8 w*6k5txyi dypre of negligible resistance is added to the circuit bet wtd1x63kyp i85p i*ydween 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 circuit5/kk31pju1dqcw r:t t shown, when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have rq:315 ukrdc / wtj1ptkesistance 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 sq g/c-oqfggid1j/e2 3 hown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also become brighterqdj g23i/c/qg1og f-e?

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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 into1 )tmcf-vr 2 zu4jaw4m0zo0tk 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 closed, aside from bulb #5, which of the other 4ur-cmm otzz)at4wjk 0vf120bulbs 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,kowx)hp*z10rk) h z6hmj:vr) the battery 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 oh xkj:hho 1 wz *)vzr0r6))pkmut 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 lightnwpzk .:+ s8ddcuv1;l:.gb mo bulbs 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 chosku : mob8n; .lvpc1ddg+z :.wices 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 has 4 identical light bulbs connected to 0q59c.*j j:b g+ei5r qdt)9cxbit e6wzhn)kqan ideal battery. If bulb #2 were removed leaving an open circuit there, what hahq)x6qnti+jg d . z)qwb*95cj:0tbee 9 c5ri kppens 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, w.o9 fv8kr. ly5s9jdehhich one of the bulbs will not light? ldy99ks.j o f85e vh.r

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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 pgcwuf*x )x ca1 i-ndqmg/4)8is initially I. The switch in the circuit then i gufxwcgan d8i- 4*c x1p)m)/qs 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, the four light bulbs have identia87vrhaz7:w hbul t ;3cal resistance, all wires have zero resistance, and the battery hva87; arth u:l7b3wzis 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 circuitta+ 5bltg5jyq(g0 410rpmf ex shown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bgp l5r 0 ame+yjx 14t5fqb0gt(ulbs’ 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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