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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: 匿名未登录开始时间: 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 db,l/(9 hx yb +zmuzt;e :blo fobi447N are connected in the electrical circuit shown in the accompanying figure. In order omhx(ob7 ; bfzzl+4,o il :btbudye /49f 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, M, and N are connected in the3 aso+ 91korbg electrical circuit shown in the accompanying diagram. Rank the current througgrkasbo19 + 3oh 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 el1b+( 0lep dn)tb *wxuxectrical circuit shown in th u1l ) 0*d(npwexxtbb+e accompanying figure. 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 lightbulbs K, L, M, a +b:gk))bboxg .) lyuynd N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns.gyol))b :bbkx)+ ug y 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 bulbo9ixej 4ekca t e(a;:1s each, with a resistance of 10 ohms, are connected in a simple electrical c4oaxeja ;teck 1(e9i: ircuit 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 b* zw5z 1xf0fbhulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switchz0x* zh5bf1w f 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 angvi iv081 1qly ideal ammeter with zero resistance and four identical resistance gil1v0v1q iy8light 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 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 show 4p4e44/2pafrdk mhbpkc)rd/n, a shorting 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 identichpf24dcp) p4/db/4ke mar4 rk al) 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, wheodh7wlf0ei.; 9e voq -n 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 ;fhieqe0w.ool d 9v-7 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 asg9l,/ xro8 ll*tk++ko/v cn jw shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4,9jo/+ v x*kc/o kg, +ntrll8wl 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 connect1dp y js5)xk r5k.oacmr,2+wked 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 circucm x5+,k2y.k)worak jp5r1 d sit 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 lightzud*) ,)a.tkdh w sd;t bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the followus;)).dtw ad , htk*zding 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 lightbulbs+3 mo:.*ci- 9d,o dk r.tfatu(vdnfz up:mct, have identical resistance,the b d. zaitk: dv fum 39,cuofc+*o:npr.ttd(m, -attery 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 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 idoz2 w 5b-vf2jzqih6*pr ;h8iqentical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltagejq 5qopziz28bw6-*vr;ih 2 fh 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 op 8jy5e0 ;mc c3qhd5 nh:5s71hrnphjaf the bulbs will not light? 15pn q8sa;m3hj5 :0r7chn chey djp5h

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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 ayh:bcy n ;pt zw0(,z)zmmeter reading is initially I. The switch in the cirz;pzth :,n)(zy b0 wcycuit 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 circu6 k rfoir vq(g8ks0vx/ bxq*-ud04eo;it shown, 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 circui ;qrx6 ex/ir04q d8-0b(*kusfvookv gt 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 shown, all three b5tya 31-lk xf.qbz w-lightbulbs have the same resistance. Thefzqk-a3-bwxb5.l1t y battery and wires have no resistance. 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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