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 are co 11w y824luabu bao3cpnnected in the electrical circuit shown in the acco1p 2yuo4cl831awb ba umpanying 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 elec)v8y/z vk0;rp g6umd- rho(j.os. cjbtrical circuit shown in the accompanying diab z)pro( 6j-jcym /vsrh k .0;o8.gvudgram. 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 in the el tgte,/mcjjdc67q+8 eac 921 pmqly5lectrical circuit shown in the accompanying figure. Bulb M bur,tc jltepmc6qagdmy1c 5/2l7qe+ 8 j9 ns 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 lightbutw*uqof.ulaj - g. i+ 7:cu+pplbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Buo.p7guw+*qjui f-cp a+:utl. lb 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 connec wxb,wzrcn33 -ttknsp*p. o3cv)nd:e1; h dr+ s3kp3hw dx+re r-t*w .3z:nccpn v)od; bn1t, ted in 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 resistance j1c ynezr )p.om)/ipe n7xlc* y t-b:*of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram ye)x* t/bco7cnyl:nj z.mp-) ir*e1pbelow.
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(gpx6v21 pv4glth nw5t0r 2gfhi d8v( zero resistance and four identical resistance light bulbs which are initially illuminated. A p5xr h1ig hp2(t4vv n2f0 g(8gl vdtp6werson 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 w 5fm1 ,.0 i4nfrwcp;+cxltgghire of negligible resistance is added to the circuit between points A and B. When this shorting wire is 04+x1 5c.l ,;prmgwnhiftf gc 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 show+pwlu-0ksq9+ 69gr(h0mc nycub hi-o n, when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that hocw ln+h u um+9(0yi-kgp69r sq0b c-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.. cabbz)t oa 7cn4s:e8 When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also bec 8cbsc.aeb7)4noaz:t ome 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 4*d iyw8r jl .n/tm4wv into a circuit as shown. All wires arernymi/wl d4 .t8wj4* v 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 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 ligb oxc*8 kk)3vpht bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices co v3)cob8xk*kprrectly 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, theb)gm w/5 xv xi.6orvg4 four 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 x4.v6/bm5xigg)or w v 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 ideal06gr;e(jn )3eu7/hwejgbo yn v) qr0b battery. If bulb #2 were removed lea)3y 7nevj6u( behr/0wo rq g)j ;ebng0ving 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 on4x3mktva4f a+ lfg h72e of the bulbs will not light? t 4vk fxg4m 2hal7f3a+

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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 readfnifm3 u/;4kking is initially I. The switch in the circuit then is closed. Consequekf3i/f mun4k;ntly:

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 shownp/ )./zt eibremok8g/, the four light bulbs have identical resistance, all wires have zero / /ri /pzo mg.ek8e)btresistance, 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 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 lightf--c9sxv k16kjk *kjpkd+ ,pi bulbs have the same resistance. The battery and wires have no resistance. What is the proper rankkp k-i1 xv+fdjcj9 ,*pk6skk-ing 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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