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 akfzyl3 o4-j2 9qt 9be) .ny3v exis8yelectrical circuit shown in the ya2bf4q-ez xot3)ykjl93 8is9.v yn eaccompanying figure. In order 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 N are connect2zzm-guni y)hxr * hxw+,k7f2ed in the electrical circuit shown in the accompanying diagram. Rank the current through the bulb7yh-hrkg uz mxwz2,*in)fx+2s.

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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; (hvav8um*wy in the electrical circuit shown in the accompanying figure. Bulb M burns ou v*hw (8;ayvmut. 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, M, and N are connected in the electrical sp0x liy1mn tm1q)t/50 gmxl3circuit shown in the accompanying figure. Bulb K burns out. Which of the following statemen3/ tt1qs1xnxypm )lmgm il500ts 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 lh0gefsxc; a0)s.qdqu -k-h *n ight bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 - f .nkec0)*d0 ghqsaqu ;hs-xvolt 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(:heh; ,lrmg srha0+r bb pk.z6l.r:d ohms, are connected in a simple electrical circuit with a switch anz s:h6rhh,(ed:g l.map .r;rk0r+ lbb d 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 a cvzg*;w1*ja ummeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person remogw a1 jcv*;*uzves 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 shorting wire of negligible resistance is added p 3c 3fr (f;s+9hnzbunbtt*q(to the circuit between points A and B. When this shorting wire is added, bulb #3 goetnp 3b 3nb tcqfu +sr;h*z9((fs 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 resistance) conn j3j 15vdxjjzxe;3iy8 ects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume tj3jxdxv;ze1y5 j 3i8jhat 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 thsk r9pz96 o7tqe switch in the circuit is closed illuminating bulb #4, which other bulb(zsq6 7r kp9to9s) 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,np.;murf (gx5j65lw sdrz1l connected into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . When the swit fr nws jzm.pu d;1(g,55llx6rch 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 m9l jj mftj;yc g4h/-oi+8*qlyj g2k)three light bulbs have identical resistance, the battery is ideqfo2cijtj*j;g/ -g m49l)h yjmyk+l8 al, 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, 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 showhczjt37dahs;bwo :ijd4rjv2;4 af: .n, the four lightbulbs have identical resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the ciob h3act a f4 j:j7zsw;d.vji;:h2 d4rrcuit 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 an8ix kwp;gt(qh kag;(d4e*2fnt h j ,;d ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and from 2,*t ga w;degx ;i(k tqnkhhf;d(84pjQ 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 btzgbd;y v5b6gw/r-g 6i+1 romulbs will not light? 5 ;ir-y v/b+gbmzgtr g1o w66d

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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 initiallmg, /-w5u pb ew.p6crly I. The switch in the circuit then bec,p-ru 5w 6.wplg/mis 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 s8r6ygynf .s3l4xhj( jhown, 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,rl63j4g.sj(8yx ny fh 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 vjwe5wb e75 m-rhl m)sfm7x3shs/p ,.resistance. The battery and wires have no resistance. What is the proper rash-w j5.3)vfh,w7r 5e s7empbs/ xlm mnking 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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