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 N are connected in the elect+fk xql, ;n(*br)lou zrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightest), the bulnk ;),b ll u+(qx*rozfbs 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 connected in the elw 3ce.lsr2o+equ3vgf- x-3k lcrr+o 3ectrical c lfqroxok+v-3rce 33+ e3lrsc uwg-.2ircuit shown in the accompanying 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, L, M, and N are conn5a4; + k4uz+cvwn9 f.eaj8e4ihubr q fected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following n evehkw r5qf +jiz.cb4u aa+fu4894 ;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 connectedi*apm1 r9 qljt+,rqf. in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements+pm1ft.*qqrijal ,9 r 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 light bulbs eachu4qk y) cqyd7mm71*xb , with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in t d)m7cy k7mxyqu1q4*b he 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, wxa9w ;oaclc;hbu ,.p 0ith a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the; ulopb09ccwa ,;ha.x 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 wrhq wx;4ayw8zk9 yh0/ith zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its wak/ 0y;qw8xr9 4hyh zsocket 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 shorting wire of negligible resistanck3iwgq;cy u4/+7 8m rrj pvq jek0h1;we is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbs (all ident;r8er3chk;ijw40 71q vmyk/u +gqjpw ical) 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 resistance) connects npbxzv ,hch //an4 ,k;the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and h nhc,/,4n; x/havb kzpave 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 light3k yu .q/vto/gbulbs are identical. When the switch in the circuit is clo. qyo 3tuk/gv/sed 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 bulbs are connected into a circuit as shownkgx9u+by0f+ +bq b 3ji. All wires are ideal with no resistancebuxibby90 fq+j3 +k+g, 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 light bulbs have identical resistance, t d9kn9or v*giyi:1wx/he 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 completely when the switch, n 1/yi dgxowr9i *9:vkS, 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 5 *rs (z)0mzztynx4yd have identical 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 wh5x*(t d4mznsy 0 zrz)yat 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 show;bhj9e+ib)wr s* n fg:nora 1d63lb; gt.sne 2n has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens ts;rdra+b9f)o n;*snw g6.g1in3bejb: e2h t lo 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 bul0(b9 kwsy3b/jhdrv)9vfe;kr bs will not light? v kjy39kf(9 h;/0bdesrrb v)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 circuit shown, the ammeter reading is initially I. The swit1p5m z1h9z9p0 bj thsxch in the circ 1ps91m9xthzph b 5zj0uit 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 bulbs2lw il6kp yke*r3k c5+ have identical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the switlcky * i2+ep35r 6klwkch, 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 hav l)bdrlcj4-yz 2p1 ;oyxw4q. ce the same resistance. The battery and wires have no res. 2llz4d;byp4- r 1j wxo)ccyqistance. 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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