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1#

94.28: Four identical lightbulbs K, L, M, and N ak+zuh xx:qb4 (re connected in the electrical circuit shown in the ah:x4 zuqx+(kbccompanying 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,:a-q9nstzv.v f 16ley,+ sse w M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the current through thsfsneyz, .aevv:l+tqs w169 -e 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 tf: n43 nx5o: e9q)r 1veeyfltare connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following r ee 1fyqxtv4tofn:53:n9)lestatements 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 lightbuwqw03z- (pss-vxqc00 ziyk m6lbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb Kpw 0(wq syiz-0s06mzxv-3kc q 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 aqyk -5k:/ iici jxco92 resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery a-/kojc2: kx9qii i cy5s 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 ligykej7oq 1 sdr;.qw2t;ht bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt batte.y7 1;t kdr q;jeqs2owry 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 i:*cqlxgw bw 08deal ammeter with zero resistance and four identical 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 tg8x lqbw:*c 0whe 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 neglv+cx5h5v kzp7 e1,d* gkcjm96wo 8larigible resistance is added to the circmo+6vze7 1j 9 gcvk,wp*5 5 hdkl8caxruit between points A and B. 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, w2cpry8kve ;fdpgbxc -sr:00 2hen a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs arbcpdrsce0;f-r v 20:y2kgx8p e 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 t7 w z172/bdo1sav4xxhb v ua8phe switch in the circuit is closed illuminating bulb #4, which othe h2 4 zd/bp 1b1wx8u77aavvosxr 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 i/4;rvj q d5akb x80nc;mz wow:nto a circuit as shown. All wires are ideal with no resistance, and the id/bjardn5oz0 8ck;q:w v4x ; mweal 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 resista 35nlf9hlpy 97lj8h slnce, the battery is ideal, anh s lp893n l95lhjyl7fd 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 shown, the four lightbulbs have identi tawe,fahtrj -(xbx,4 t047 sical 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 thhx(swex jbatt4,r a4 0ft -,7ie 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 an opq37x9p7x( kmj5kh9ddk yij hp43u3*bhd . qideal battery. If bulb #2 were removed leavingoqmxhb3ki q9d h 4px.ud7dh9y*kj3k 75(p3p j 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 circuit diagramj92-9a6x lx vdqyoj2-dyw y t8, which one of the bulbs will not light? t 6yyj d jq8-2-lwdavox92y9 x

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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, 5c*;fj8 hj4)j,idw ad1 wvf juthe ammeter reading is initially I. The switch in the circuit *aiwc ;)u,w jf58hdjdvj4jf1 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 bulbs have iden*waks+d. hrw.tical resistance, all wires have zero resistance, and the battery is assumed to be ideal wwk aw*dh.+ sr.ith 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 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 lightbulb1pbd 75 ,hh :eto:es35rqp gtis have the same resistance. The battery and wires have no resistance. What is the proper ra:3 5 bpsqh:t1 ,oehed igr5t7pnking 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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