Combine Problems - 无忧得胜-网上国际课程 (5edu.win)

1#

94.28: Four identical lightbulbs K, L, M, and N ar/ie p,v u;ijyjp02lz/e connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the,z/jy2ve;i l ppj /iu0 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;2bokzv isd 37, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the curren27sk3b ;do ivzt 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, 8k-xmixg0tc+p9y z2x onk4xeg ).t6lM, and N are connected in the electrical circuit shown in the acco8tx yeg2p9k xn4xtc 0il mxo6g)- +z.kmpanying 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, *hgm :a 4iws*wl w( ,a8+p. vr.zq f4zbkfw3yrand N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the follo *kz .gfv,ha4my(:lwwb.8rpa *3zr s+ifww4q wing 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 connv:: yd pypjlvt+ n5nv5,q ng/:ected in a simple electrical circuit with a djl5,:5+vtvpy:nqn/ pv n:gyswitch 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 resistance of 1x n7cn)xp00jo0 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as showncjpx )o0nx7 0n 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 ammetemyv mv/+bi l 0c1q/qf.r with zero resistance and four identical resistance light bulbs which are initia+1.flm/bqyv 0qci / mvlly 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 7/51 fkml+qy 8gmnpj jcg *- ucg,xmm-shown, a shorting wire of negligible resistance is added to the circuit between points A and B. When this shor- qm/g+8km*c j mpcugfm5n ,gly7-1jxting 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, when a shorting wire (no resi90rtwb:tcnf6t 39na rstance) connects the points labeled A and B, which of the numbered lightbulbs become brighter0:tr93tacnbw96t f rn? 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 conmuak- its703b)vtn* h nected as shown. All lightbulbs are identical. When the switch in the circuit is cm-ntuvs0 ba3k7ht )i *losed 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 bulo,a c p7yesb51bs 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 bubp o7sc,ya 15elb #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 resiv3w x zlrw:x rn 20x2k36zjqs)stance, the battery is ideal, and s2lzq36v2wwrx k)0znxj r x:3all 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 identical resistance /ys: nzy, .2j lmhcdn-83bqz:f0h s3hpyl)f n,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 P and to the magnitude of the potentia nyh chl3:lfq:s. s2nn 8fypy/z- 0h)z3 bd,jml 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 connwhap ,hmtp0//ee*b1n/ ocqk+3t 2qex ected to an ideal batter,meb xowe/pte qpk+h ct/an 3h2q /01*y. If bulb #2 were removed leaving 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 diagram, which,dxyz293v hu )odkk 4e one of the bulbs will not light? d o2x,9k)4eydhk uv3z

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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 switch ino0llkay:9tau d-(e 4t the circuit the-(y tu9dal oteka04: ln 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, 7hba,gyoac5+ pq--ty the four light bulbs have identical resistance, all wires have zero resistance, and the battery is asc-pq-ga,7 ba+ y5tyh osumed 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 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 shce+62q7 gvv ox6tjpf, own, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the tcpgqox+ 26 v7j6,vef 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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