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 2v bt x04gtmg d82mc4nN are connected in the electrical circuit shown in the accmb8n4 mg ttcv2 2g4xd0ompanying 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 connected in the electr r3z9ao/ qe j ;:f6fyif0 ;n6qqvunxsa7; m*afical circuit shown in the a0ajmxa/s;rou3;ev y6 q zfn nfaq7i:ff ;6q9* ccompanying 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 connected w+;bi) yv3 * anbh;)gry3nnitin the electrical circuit shown in tr b;ti y3inyg+hn)wa b3*v; )nhe accompanying figure. Bulb 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 electriq (y7u4a;f ,fqrul.it cal circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is tr 4 r.7 laf,;qfiqu(uytue?

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 resistanlfb 4an )yc1p+ce of 10 ohms, are connected i1 cfa ly)np+b4n 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.wo0qu qo-lf; resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram of0;qoulq.w- 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 +x nfhks).rndiycgx /,t-f +2 four ide+f-/k idxr2x) ,+.nsgcftyn hntical resistance light bulbs which are 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 shorting wire of negligible bipp r1/f6vcz7 qjvo9,/sc0 kresistance is added to the circuit between points A and rp/o vb qki6cp7/vz9 ,cf1j0sB. When this shorting wire is added, bulb #3 goes 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, whedyb(ra/13ew 5ol/rqbzwi-, le7 q a e-n a shorting wire (no resistance) connects the poinara 5dyw eeoqew,/1q- i /7(bzl3l-brts labeled A and B, which of the numbered 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. W j u70o7pn z3ycsz*cdpv9)bg,k 15zfshen the switch in the circuit is closed illuminat z71) 95z7bpvynscf g*3p, sz cukjdo0ing 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 bd z9i zhk+*o4aulbs are connected into a circuit as shown. 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 ot* +9ki4 zhdzoaher 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 1/jhuu1xi+a5 adti3x s8hq s( have identical resistance, the battery is ideal, and all wires have no resistance. Which one of/3(uiqhd8 hsix+au1 j15 x tas 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 shown, the 27wlft any70zfour lightbulbs 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 what happens to the magnitude of the current at the point labeled yan7zw0f lt27 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 an ideal bnr 52 gy:c1zgp g+ivc0attery. If bulb #2 were removed leaving an open circuit there, whatgz cy:gp+12rv5 c0gin 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 bulbs +oj *yahou7kt6 9v) lq pqz.k (vq3qe+will not light? +9u(qqqkev)+jo6tl apyho zq. 7* v k3

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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 b zn/selk2woaav-.td,4 ah s1ms:g 45 switch in the circuit then is c.n:4-/,zve1 k ssslmoa2ba 5 h tdag4wlosed. 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 bulbs have identica2 n* :opdf,z8q2 pogyel 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 dimmer after the, z8gn*op2yqe2fdpo: 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 resistanw(o.zs i2i :st37e,ixk /ujs efwq)9m ce. The battery and wires have no resistance. What is theswwf,i/sekoi(i)em 7u: zs t 3 q2j.x9 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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