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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, M, and N are uh du u -49om3gfc3ynha+p 87hconnected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (startin h+34c7om p hg uudhay3u8-9nfg 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, anqh76 v( e:l.rv rw*r tc,d.ekvq2cv8 wd N are connected in the electrical circuit shown in the accompanying diagra8( vvrcv ,.el :. r*6qkeqwcvwd7t h2rm. Rank 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 iz9ypx60z) wm 1kxq r1x 9bf5gyn the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the follo) 1 xgz y xqbxk0p61fyzr59w9mwing 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,it v0uoimz;6rj5cy o- 0,-jw t/ k16xob(tadk L, M, and N are connected in the electrical circuit shown in the accompanyin m1dt-ao 6o0u,tyz(b 0kt 6;jjro cvx/k5w ii-g 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 identical li 7ahza2q3xk2eght 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 b2x a3za keh72qelow.
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 ohms7cos-g)+4 h ughv-l ij, are connected in a simple electrical circuit with a switch and a 10 volt batte- uigc g7h ojl4-+hvs)ry 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 .hqv .88rhs89kc fvbu four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permanently breaking the electrical circush9qu.b.r h8kc8v8v f it 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 resistance is ( gj7gkm48()tcjtpnqi0 +g xn added to the ci0g7npjct njktq( g)4x m( gi+8rcuit between 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 circuit shown, when a shorting wire (no resn;6 a2 -,r juxcrdo4oiistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identd,i6orc a;n4ro2u-x jical 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 lightbulbs are identical. When tleedf57y . b2-a4 g2bil orixvu0w 0m1he switch 05iblo fuige0 bl2- y24ar.dxw 1e7mvin the circuit is closed illuminating bulb #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 hm 4 mx-bs9s 4ydpj0cj)7ya .gbulbs are connected 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,jh. -sgp bjsc49)damy407mxy 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 light bulbs have ident (14;trhouwkqqkjp8 ai6: yq)ical resistance, 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 out k4qa;iy68h1out qqwj: )rk(pcompletely 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 q wmcqjt6k1 (9four lightbulbs have identical resistance,the battery is ideal 6q9qktw j m1(cand 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 identical light bulbs connected to an idea7;-uyprd (avbla l; -al battery. If bulb #2 were removed leaving an open circuit there, what happens pd a(;l-a7a-u yb;rvlto 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, which one of the bulbs 0w61vmeshw;9vje ;j bwill not light? 6h;mv0;1jv9w bwjee s

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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 switch invgi. ymj6w r6(dobk8,n ex6 s- 6ow.-mji6 8sry( gdbek6 xnv,the 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 2w qdh2w(/+ cja:atsjhave identical resistance, 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. (t2/h2j:wsa jqadw +cWhich 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 thred6 b9l.;mlmd pa d1tj-e lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper rad6p 1mj. d9;mtl-dablnking 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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