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

1#

94.28: Four identical l0m d1kfl1t7 s3w5wfulightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brig 5lm 1w7u01fw ldt3fskhtest), 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 connected in the elect j,kanm, s 70x:q) so7jqqk(cnrical js7xm7(jk osnq0k ,, )aq:qcn circuit 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 identica8m xzc6k4 jz,-7rk plwnwtnq6bt;2f;l lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bbj2;ptz; 6 r,m4tl8 zwkk cxqn6n -7fwulb M burns out. 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 elxwsr2q u ed0/0hhmqh7sk(77ef,u(mk ectrical circuit shown in the accomsm7eq hm7wh( uk x2 uk,r/e0fh sq70d(panying 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 light bulbs each, with a resistance of 10 ohms, are connecn28-yg /z)hc xs8ownrted in a simple electrical circuit with a switch and a c)yxn- wrgzo2n/s8h8 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 ohms, are conn 3+uqle - kkc2rztp: cu5eo2s3ected in a simple electrical circtr e33pql-25c2ke uzc :ko+usuit 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 aaim e 0ch;6zil.7c8ykmmeter with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4iizy.c7ma; 0echk l8 6 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 wirexyf4 vyb(+:w2*swb; p. ltqzx of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bul(4zlwx:y; bqwxy .b+fs t p*2vbs (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) connects t sb w(e,gkr4hj,d)4q xhe points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identical and have gw4 e j,dx k4h(r,qs)bresistance 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 td0 tnch2x,h dsd6wl 0-4zud*h he switch in the circuidtln0,ds2 z*w0xh 4 c6 uhddh-t 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 bulbs are connected into a circuit as showtv n 3zhpd0lis,kq,1)i*(b s pn. 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 other buis ,invldk0)h zbts* (3, p1pqlbs 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 resistalx lr9mrtn8i)(,dqet; j;1 d ence, the battery is ideal, and all wires have no resistance. Which one edeldq8 ;rjimn9 ,t () xtr1;lof 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 showpwmb64ah; v lr.e6 fwr7+dzk 1n, the four lightbulbs have identical resistance,the battery is id. rdwm 7zwfrp;vbe1kh a +466leal 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 utnyrkajld/72p o-bj* -6u x8 has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what haxj78ot/ ru-*ka u6-bdlj npy 2ppens 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 followinvj .excdt50 h4:od*oxg circuit diagram, which one of the bulbs will not light? ectd*jv5o4.xx:h0do

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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 zod h h;ra0,u x7g0l+areading is initially I. The switch in the circuit then is closed. C,0a zal; uho +d0g7rhxonsequently:

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 foura e75kg)2xe 2ly hj4hi 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 will be di ke )22yh5ih 47ljgaexmmer 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 thre gt6a gu ;(xhe/yfgrc6x3r *o4e lightbulbs have the same resistance. The battery and wires have no resistance. rx(r6xtue4 g ycga* h/o ;f3g6What 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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