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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 N are g)rb1-;. 8+yxydjxf h 5ptbp sconnected in the electrical circuit shown in d h sj1y pb+tbrf;p8xy.g)x5-the accompanying 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, M, and N are connea* j.bt* osb05)yynb icted in the electrical circuit shown in the accompanying diagram. Rank the current througonb*b*yya. )0 t i5sjbh 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 connec ufhb-/3 xd ub6w9exl zfhd+0jv, yfz+4*6 vjxted in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which 3xjhvh d+9+-ef0 uby xbfdf/zjv zul x6*4,w6of 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 l73mjjew;n h4 eightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanyinenwh;mj4 e7j3g 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 identicalghk9*kmxbd x -)v(n4nf-: mbv 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 diag (bv mkfkx-nv x: hm-dgn)*b94ram 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 10 ohms, are con50r;guu, ujmo/ d(dxb9)eubj gp,b l7nected in a simple electrical circuit witlu5x0u 7b pbo(/gbe 9;ujju,)mdgrd, h 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 sho9jne82)qmic ozib gj-j::v/uwn has an ideal 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. Which statement is true of the circuit afte)2j :-:ojui9j/8cm nqgz ebv ir 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 odvo)d7s8. umbf:k*ekv,res ub. , h3tf negligible resistance is added to the circuit between point .uh*v7k.f 8uvm , srb3b,:edtseok)ds 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 shohfssoy)jtu 3 d81( cm:wn, 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 identid( stmujhcy3 f8: 1s)ocal 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 lightbulb ; l;w6vaii6dmrbe /3ks are identical. When the switch in the circuit is closed illuminating buvdi ml ;ew3ab;i6/ rk6lb #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 identical light bulbs are connected into a circubd)lm2 m uo 28-byhe9 bbm;trij,/n 3hit 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, aybhu ,bb9jo-mb m 2nr)2 eh8l; 3/dtmiside 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 j0+n6sl3 epx6qnl1il bulbs have identical resistance, the battery i 1e6q+6 i0p3xlsnjl nls 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 shown, the four lightbulbs have identical resis lyi hsnb+ n/pf( f0)g2xtro,)tance,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 current at the point labeled P and txp0nio ) b(t+)r, /2lhfngs fyo 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 sho6ue dg7rm.ky-wn has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 andyumer76. dk- g 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 bl1kd+q7ac 20ztmgc k/4zma)oulbs will not light? z7g z40qot )ccakdk +2 1l/mma

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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 readi5nvu8r9rbag d2ki87dn) x:dong is initially I. The switch in the circuit then bd d2 rg7)ukd r85on9ixv8na :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 resistance, abzfdv8d 4e( 4nll 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 4ne8df(d 4zbvlight 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 lightbulbs have the same rpktj j9;ro- wp/(utvea.4+ 9jm-n pxo .g z*bgesistance. Thee/anp*j(m+wp- b tj9.rv- touxp. g;zj94okg 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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