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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 connec/:n95vdrlt;d 0xdx6kldm)r4 i 1 hcaxted in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting wilxrd;)xk lrhmd95vcx: n0 t16a/ d 4dith 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, 1(1 twlv1u c1h: zdmeeL, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the current through the bulblht1( e:z1uwd1vc e1 ms.

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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 electricay305h7qzxizcf0p7ppo 5 kwi4l circuit shown in the accompanying figure. Bulb M burns out. Which of the fol75kio4f5hqix03yw p0 zz ppc7 lowing 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, and N are connected in the el y ,z.hr7;5zlwar 3ydtectrical circuit shrl735,yat rzw y;.d zhown in the accompanying 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 l8jk ni yu9.:hgight bulbs each, with a resistance of 10 ohms, are connected h8y .n:jukg9i in a simple 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 10 ohms6rp:k; fx/u jg, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram belo xfu;6:pjrg/ kw.
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 angiw,-er:b yj5sf ::hv ideal ammeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 :rf g:yi:j,w5bhve s-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 shown, av 4.c167.sh+s nv6 /actm s wnnni*ybh 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 identical) in the circu4 na.cn i1t7nv 6.s h+bsyscv/ *6mhnwit 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 w) v38e9uj q*(flxivishown, 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 identical and have fx*ql9( vi)wu83eivj 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 idenn n a7;lew.p0vtical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s av7. nl0wenp;) 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 circuit 4)j81lzbyql ;cjl8gts7qo4l ,d sf0p4py 4 dbas shown. All wires are ideal with nbbyqjlt4jl4 gy)pf;o07 s lq8 1z,cdd4sp8 4lo resistance, 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 shown, the three lightf* vu 0z z5:yez7nh*ga bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the followingz*z0u :nve*h7afy zg5 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 resistance,k jl6 0gc8t-efthe 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 an6-8jlt 0ge fckd 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 lil++s98c b;*xdzimfw; ncu kfc;;he7 2wm6lbulbs connected to an ideal battery. If bulb #2 were removed lw*i ;bc de8hui kx7;z wlf9; fsmnl+2c6+l;c meaving an 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 diagram, which one of the bu2 e+wcba22wp ulbs will not light? +ea2w c22pub w

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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 circut 8g( qrvqsxy2w j 5w7v283aowwp-+myit shown, the ammeter reading is initially I. The switch in the circuit then is closed. Cons3pyxawo rvmv22+(87g- q jtyqw8 w5wsequently:

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 hws+73d v tb6 n ilvwn3zf*4y/*yon.kshown, 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 circuit is closed, a wire of zero resistancby+wf.*4k oh/ l sit363nvnvynzdw7 *e 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 resistance. The1w. .stj7bb.gbkv zy3 battery and wires have no resistance. Whgtbjw7 bs 3yk. .v.1bzat 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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总分:18分及格:10.8分时间:不限时

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