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1#

94.28: Four identical lighsq, w+im pm46htbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the bri4sp m6mhw,+ iqghtest), 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 lightbu o l; sxfg+fu609;6 ckvu7pgqelbs K, L, M, and N are connected in the electrical circuit shown in the accompa+ o0gvf7p ecuxf l9gqs6 ;;k6unying 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 conne /dxq)e0 ja)cdcted in the electrical ciqdj x))eda0 /crcuit shown in the accompanying 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, and Nu2c3e - iv,fd2 /4mwahuspfo5 are connected in the electrical circuit sm-v5cf/2ua2hpwd, 4 ifse3ouhown in the accompanying 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 bul,vac2o eirkr , so :iu+b/(1hvx )lh;obs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt ko o r;sbve:i2ichl(/+houx,r)v1,a 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 res5*bao hrnv*xxe3 ei( .istance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagh5e*n3.e abiv* (xro xram 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 res)c7h ucg(qi, vistance and four identical resistance light bulbs which are initially illuminated. A person removes the bulb R4 from its socket thereby p,()ic qguc7hvermanently 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 show. x.e kic x6i;fmp,1h3z /ycion, a shorting wire of negligible resistance is added to the circuit between poinoke/fc1i h.z.i;c3yxx,i p6 mts 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, when a hla-9gt9cv hi4 we07q shorting wire (no resistance) connects the points labeled A and B, which of the numbered lt9lh-eg wa7 9i cvq04hightbulbs 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 ud7go(;baxa7+nw33 d ym yi7khi,t y/are identical. When the switch in the circuit is closed illuminating bulb #4, which other b+,7xynyhmb g i3ow(udi d y37a7akt/; ulb(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 a3z by :1yz n)o (pn:sg:8ultctre connected into a circuit as shown. All wires are ideal with no resistance, and the id:np1o 8stz)lu (t::3 yznby cgeal 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 idenlh 5e1a ykk4 ;azy+r7ltical resistance, the battery is ideal, and 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,; allzahry+4ke 7yk51 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 iden3bf60a- en35 +4ut mvbjauf wvtical 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 P and to the magnit- uw03v5+4a3bef j tv6 fnabmuude 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 ideal batte a+8h1/, cndcd ,fmngbj8q.,juc p xk+z :gnv3ry. If bulb #2 were removed leaving an open circuit there, d.1g /p,k+vfn,a:cgcq8mxdcuj8 h, bn 3 +jznwhat 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 circuitkcmob/q*do/5jf1in h : j.)ig diagram, which one of the bulbs will not light? 5fkj1 qi d:cm*)in hj./ogb/ o

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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 circui. z th36 /( bnzprut;unjc:nr+t shown, the ammeter reading is initially I. The switch in the circuit then is closed. Co ubu z6ntzn.;+p nh rc(tj:/r3nsequently:

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 identical resig )jk6m u8jpfuk85mo5stance, all wires have zero resistance, 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 akpu68o m gfjk5 uj5)8mfter 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 thr zucc4wvw 97h9ftytj*id ve+-ic-ur-.xky ;3ee lightbulbs have the same resistance. The batterykt c3uhdrcxvj9c ;-7v-* .f i+u9y4zewiy-w t and wires have no resistance. What is the proper ranking 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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