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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 arec o;ke nzj1f33)o73ja 5m3cw:j obykbai1w.r connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (startinnrb3a 13.fo3jj5e )oj 3cyzwbmiok;a7:w ck 1g 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 lightbulb x/ua hjfd7-iai ru.zy*wy*n)5 l)j8zs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the current through the bulb*a ujh f7y/8iaiz))xwz ljn ru5-y*d.s.

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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 electrical3ui7rv pc:e7 e circuit shown in the accompanying f:ci 7vrp7e3u eigure. 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, M4u ;v u ukv:0lo 1wjzn/3zrt+g, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is truen:u j0gto;uzl/ r3w4v 1vz+k u?

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 em cl2wfm+l :4jach, with a resistance of 10 ohms, are connected in a simple e:+ml4lmfj wc 2lectrical 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 10 ohms y zz 345;6fn sx6kusns.jlcl,, are connected in a simple electrical cirky5l 4szcjsxf3z. n6;s,l u6ncuit 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 resista:e,glwo*dz ei6mfh-)nce 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 eleo )g:6-, zw imfdh*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 negligible r)e:m y-ut*. cnpgpje6esistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbsgm cep- ) uy6:et*jnp. (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 shorting wire . :yny4;e ruw1uh4auv (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all foua;w44 . u:erhnuuvy1 yr 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 k+m zl:rt nn7w;h8m uo5x gb)*shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(mg5 xnh 7k:w+bn;*otzl)um8 rs) 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 conn6h v ile7v9v9z 3dish;b75hxh ected into a circuit as shown. All wires are ideal with no resisthsvi dhx 7hlz93 v6vh5b;e 7i9ance, and the ideal battery has emf ξ . When the switch S in the circuit 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 fgfm7 l(yk y:zep:90cshown, the three light bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following cfzl9:epkym 0cg:(y f 7hoices 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 k o2*cux fe1k 8,oc:z jx3auv/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 current at the point labeled P and to the magnitude of the pote,fv:k3eok/ oa u*zxcu 2j8cx1ntial 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 4ewjmpy( p6*w9 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what e6 (jww*p mpy9happens 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, b0 25:ly : mf/v v147anfijhprylmd/ 38xvsxo which one of the bulbs will not light? n3vapym/5ifb0m hd :7:l/xl2voyrjv8 14fs x

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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 ammetp3n)4 +wx 2env qbezs(er reading is initially I. The switch in the c24 w3()exe n qzpbvs+nircuit 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 idenkg :p(lej:d ,2 1 oq2bmfu1nmvtical resistance, all wires have zero resistance, and the battery is assumed to be iv2e: nl( j: k1do, 2g1fbpqummdeal 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 circuit shown, all three lightbulbs have the same resistaneyi er q6yfr1xi47td;+c d m8mso26 b3ce. The battery and wire6tye se8y7x; rqo63+f d4i d rmic1b2ms 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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