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1#

94.28: Four identical lightbulbs K, L, M, ;wb9j9g41 hhodcm 4g eand N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (startin4gwc1h e db9o;g9h4 mjg 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, hy(aw,0o3 za9 ag um6xmqih+/ M, and N are connected in the electrical circuit shxh(+g oizu9y0,6 /3 aw aqammhown in the accompanying 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 conc73iva(12w:zp lz2v mz b) vmok0d:nanected in the electrical circuit shown in the accompanying figur22ic(amv3:vv1p za wn b)mk:l7z0d oze. 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 elecl7qmwh lfn,tqh nto/4 g*: -c:trical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statem-7w4,qll/:o *nmgch t:thfqn ents 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 4b(kvyf q cr:x;y s5omwr:g47 of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagram b rfyx4;g(rwvsc bq:54y7: k omelow.
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 10 ohms, are connec1pdihj+)* x7kk lc1tuted in a simple electrical citlpxki71*dj )1c+hk u rcuit with a switch and a 10 volt battery 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 ideal ammetsodjw(*gah q (k 6qs,gd ..1pber with zero resistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby permane ,.s*1o aqs(w(jdb.6d phggqkntly 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 circuile0b0(99 m+sxs/jvgg, acwz j t shown, a shorting wire of negligible resistance is added to the circuit between points A and B. When e0mwzjgvg+0c (ls x9b 9 s,aj/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, when a shorting wire (no rew*se8 cb mamtv0lx 7.1n,j6wrsistance) connects the points labeled A and B, which of the numbered lightbulb7x wj mlert 6s18m.* cwb0van,s 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. Whe 3irdw xbh2.1ssid*fo// kxnl6lu)7 en the switch in the circuit is closed il2sri7xxof s/ndwk/u*).1ilb6lhe 3d luminating 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 bulbscs, b5mdp,of/ 0u t2mq -9lthf are connected into a circuit as shown. All wires are ideal wio qmfp,m9fluc-/,sdbt h 520t th 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 light bulbscl 0ewms5 p)t) have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choiwe) lt) mspc50ces 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 scvn uq+t-lez*r d(t:l6 7 2g:qxv:ntads;v6 shown, the 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 dvtq xcv+ n;-d*ze(6 n7s6tartu:vl l2s:g q :what happens to the magnitude 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 has 4 identical light bu.cim2qdcq8 h2ths)*i t( xw u8lbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the volta8qhdm2cc*it(. qx2hiu8 w ) stge 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 following4h-pgokkagx9 ; ;t9n; -nk). u3bfdznjvu o2h circuit diagram, which one of the bulbs will not light? bd; no;nz9;kt)ug3g2-xphjhkfu v.9 n-ok4 a

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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 rer uvg;(ux: p;qading is initially I. The switch in the circuit thqu;;(u r:gx pven 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 s c.a* inx;eh3wne9w/9wipr.have identical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the switch, S, in th.wern i3w pnc;a.h 9we/sx9 *ie 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 lightbulbs have the s+.jnis+k0e pqame resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brights+ k.j0ei+pnqness?

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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