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

1#

94.28: Four identical ligauc+xp .) 4 li0g:karehtbulbs K, L, M, and N are connected in the electrical circuit shown in thg.) lc+ pir0a:x uea4ke accompanying 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 t( n4(c1iw;) hlx/dy :0b mfy tmr:oslwhe electrical circuit shown in the accompanying diagram. Rank the current through the bulcd :o(my/ iwtr4 ws: (fxblln;0) 1yhmbs.

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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 electricebpr trxh qi 149,h7v+al circuit shown in the accompanying figure. Bulb M burns out. Which of t47th 1 x9ehb q+,rrvpihe 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 elec vr .v,66owk93ywca2 hq /cmzs6*oqlytrical circuit shown in the accompany yr oh w zlak6c,269m6co/*q3s vy.vqwing 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 k/-y. lzjnix j wz(,1:-rgku l10 ohms, are connect1.ilr:x gjzju/(kky,wn lz --ed 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 ofqm: ticn 0k..wycea(n8b; 6l o 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as show(wlnkcc a:n60bmei o 8;q.t.yn 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 ammeter with zero resistancd+kbw/q9- w ua)u: 6(taw5kjrp pib9oe and four identical resistance light bulbs which are initially illuminated. A person re baq-a 9+dw/ukwujrkw(: 59b)ppo it6moves 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 w7d w)ej-qi4 diire of negligible resistance is added to the circuit between points A and B. W wd-d ej)ii74qhen 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 s8btn; yp/e5q)p gdkw y9 eg -/8etgx4ohown, when a shorting wire (no resistance) connects the points labeled A and B, which of the numbered lightbulbs become brighter? Ass8xgwt84 edq k -9pyne ;te )og/byp/g5ume 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 connectedxs1lprz zgfhi20+ 9f4 as shown. All lightbulbs are identical. When the switch in the circuit is closed g1x+p0rz4l i92 fhzsf 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 a 9)baedm owtsz); m25is 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 other bulbs bma2s;zb9itm wdo))e5righten?

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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 circu8ft.w0:m d qlyit shown, the three light bulbs have identical resistance, the battery is ideal, and all wires havew8d .qmt0fly: 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 fo 9.7ah x5t0 bqo9o qd4qoagg,nur 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 magnitu0 4 g9hog5qnqoa,.t 7xaqod9b de 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 halgk 0y+trih+*s 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage acros+g khylri*0t+s 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 th+042 gehvh 3z -xqswuxe bulbs will not light? sh+ugq 03xw2x 4hv -ze

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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 is8.tpw9i 5r vq: w bo0ypcoupoz1 (*q/zwdu 42n the circuit/ zu98dw wiy*b4 q po2:5pz qv ouws1r0p(ot.c 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,* y rj,-lq4 ,yw*tqa. qbt:zrz the four light bulbs have identical resistance, all wires have zero resistance, and the babq rzqy. :z-* lj*,yw4r,tqtattery 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, algt)z7cjwct+n-faqy)9m+b d6 wh .ju/ l three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper rank.)- j/zcmugy7hncqwt 6a+f 9tw dj+)bing 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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