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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 4n (ptu3n1q9:4ffg0sadjmps ;)bvw o, M, and N are connected in the electrical circuit shown in the accompanyf0d9 4s1 an mj 4)wnqo3vpst(u;:fbpging 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,nr(6 d g,y1mt: 9gt eftwap*3m3l sw.t M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the cu6a*:stgr(wd 1,n 9gtt m3 3ewp.fmtylrrent 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 elec -cixz4-w9ag6 g: iercoiy1 /mtrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following statement-91/ii:w cg4om-6ezi yr cax gs 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, and N are sqll9 i5xde/93*k*s q h3 roayconnected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Whi l*y399rls os/d*eaixqk 3hq5ch 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 ohms, are co1mf3 ucjnvnx: 9;6om 7dgzof)nnected in a simof: foj3n 9m 7dvc6u)x1; gznmple electrical circuit 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, with a resistance of p*.woxjr+;hz )xoe z +10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt bjw* hxz ;.zo+x+ opre)attery 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 idw()so)t 2i )7ydtz dtzeal 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 electrical circuit at that point. W7tz tw2i )o)yd (stdz)hich 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 negligible resistance is addeh.ouks r)o lqj- c.o3/d to the circuit between points A ouho3lc. rkjoq-s/). 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 shormm1 yhx. 7ar8vting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs becom.mmvhr7x 1a8ye 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 con )9g l6rajds0ynected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulbra09y lsd)g6 j(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 co4/-cq 2n hngr6wrogz+nnected 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 closed, aside from bulb gorcqw -grh6n /24n+z #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 je 0,)i taz:zf-k8mx pbulbs have identical resistance, the battery is ideal, and all wires have no rezmi,-pxj) z0 ek8 a:tfsistance. 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 sf2utt;2bl( )*h2fv ..s6 xfxennop zp hown, 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 desosfn2p6f xxf tu.*lz v2)np2ht.e;(b cribes 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 an idg6ga ome5b07vb /+u1jcncyw 3-dn( eyeal battery. If bulb #2 were removed leaving anynb byn(1d056u7eoaw cc jvm+/eg -g3 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 dia2wing tw+rz/; lco.wsf43 mv:gram, which one of the bulbs will not light? w23 to : 4siz.wcl;mgr f/+vwn

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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 sw m 4obn4m9vg-owxi/bmetz6 /3 itch in t wo/3egit44v69o/bnmxm-m bzhe circuit then is 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 identical res 5g3t a,f, os5y1jhnzzistance, 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 will be dimmer after the switch is closedz y,ao5tg1sj3 5, hznf?

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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 circuitxx *rq4ls1sq+5 va/vt shown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking o5xqavt q /slvx1s*+r4 f 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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