Electricity and Circuits: Complex Circuits - 无忧得胜-网上国际课程 (5edu.win)

1#

94.28: Four identical lightbulbs K, L, M, and Nr ;xdt.r7o xx- 3nu1hz are connected in the electrical circuit shown in the accompanying figure. In oond.3u xx7;- 1hz trrxrder 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 0*d*dhxyuo6xqo6i ide6zwcr4) 08y p N are connected in the electrical circuit shown in the accqo h6d r)wx c4ix0pi *yu8d06o6ze*dyompanying diagram. 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, q5 r7.dk8sb3we vpazaj,bh):L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following ae a p qvh.,s73 k:b5)j8rdzbwstatements 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 lightbulb;nm- dqo1;lras K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is t;;-1roq nmld arue?

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 each, dj/-x9qd n1nn 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 belowdn/djx 1 q9n-n.
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 cgz,h5pjz+x6 0e *g t hbl(zh3bulbs each, with a resistance of 10 ohms, are connected in a simple electrica,jztc bh(6g+z*0xhe3g 5lz hpl circuit 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 resistance and four imyp nq+:d cp+)qm*xq8 dentical resistance light bulbs which are ) +mqxq:*cqn8pd +myp 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 shown, a so d:7vvh,pq/q*5 10og k9pmiy0lwzh p horting 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 thevq5ykg1w pzm:dvhqo h p*,oli 0/709p 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 resistance) connects the ze in.h(eh ch 2vgf*o7zyy,;)points labeled A and B, which of the numbefzg7c* n oy;he,h)h(e2z i. yvred lightbulbs become brighter? Assume that all four 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 shown. All lightbulbs are identical. When the sdr i+:c, fuwggm r)20rwitch in the circuit is closed illuminating bulb #4, which othergwcur2 g r)m rd0f+i:, 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 circuit as shk5 (5vow6*uf hd9hrxmgbsb) 2+ 5jdnpown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the switch S in the circuit is closed, aside from bulb #5, which of the othehumgn(vsjfx dr od ) h5+256 *5kbw9pbr 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 identical resisth,v 3y/9(z hfvrh -ufwance, the battery is ideal, and all wires have no resistance. Which one9r/3u-v, ff(vh hyh wz 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 sm7(fyzb +6)t; xtinlfl(u c5p hown, the four lightbulbs have identical resistance,the battetzl+ny(pf ml fiubx)t( c7;5 6ry 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 44xi2w1zha. dw identical light bulbs connected to an ideal battery. If bulb #2 were rew4hwz 2ad1i.x moved leaving 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 c7 8x sopa 0q:pbyb5t3kircuit diagram, which one of the bulbs will not light? 7x:k3p s yaq5b8op bt0

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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 anv;zcw zkj9e0 v+e3q 2mmeter reading is initially I. The switch in the circuit then is closwv+ e93v 0 ;j2qzckzneed. 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, thezhr0 o 9tp th37q1phb( 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 resistance is added into the circuit. Which of the light bulbs wibtt9hph7 3 z(qpo 0h1rll 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 re -zd2asep4/rpsistance. The battery and w z4d/sp epra2-ires 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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