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1#

94.28: Four identical lightbulbs K, L, M, and N are connected in the els+1t 7 )xebrjiectrical circuit shown in the accompanying figure. In order of decreasing brightness (starting witis) xe7+t1rbj h 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, n:mr;i/s 2,zmi ysks 1M, and N are connected in the electrical circuit shown ins1irny,2z; ismm s/:k 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 connected in thec o5o emanl6kf,w ++*7)+ :hpphcqtvc electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the followinlvp+:pf * a woc 6qmoh)e 5,+7kntc+chg 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 lightb(jfnoce 0tg*6h s y/t5ulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bu 6g0cy(s*n/eo thft5j 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 ok* +vdwqqmwb i /dq0;+hms, are connected in a simple electrical circuit with a switch and a 10 volqbd0dkvw;/qqm + * i+wt 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 8o lce7pfffpu.p6b .) resistance of 10 ohms, are connected in a simple electrical circuit with a switch and up .b pe.f7)o6 8cflpfa 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 anf.vcf5i0g jzg7*en 2n ideal ammeter with zero resistance and four identical resistance light bulbs which are initially illumi 2z.vff j0gc57nn*e ginated. 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 shown, a shorting wire of neglig9*jxxfv;j n0hible resistance is added to the circuit between points A and B. When this shorting wire is a ;0j jnfhv9*xxdded, 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 rjt.t lxha yuvel22 (77esistance) connects the points labeled A and B, which oy .l27vtt7le2j haxu( f the numbered lightbulbs 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 cordmhj pg g v9sv)6*duy8b p*3sq-fa 1:nnected as shown. All lightbulbs are identical. When the switch in the circuit issf8gv rs3h1up adbd)gy q*9:j p*6v-m closed 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 as g+- ox 2h 3ey:dtylu niige0,8*o,dm yx2g ay/shown. All wirexao /t0g+ * dl3:8xhmi2, uye,io-y2egyn dgys 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 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 identi8+ )kg.90w)cj ybjvpnuozo cnc:l3x2 cal resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the light bulbs that b)kpo)lc+.x:w 9 ugnv32 8ocy jncj 0zeither 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 identiccdpnv3rz6 4 71ct.i m7by b5paal resistance,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit is closed, v7 6pybi5.p7az b1t 4c r3dmncwhich 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 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 idwk6b+z: n0 wg/pwf-lqentical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage acr /0+ pl6qzfww :ngkw-boss 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 follow 5nu;i 6 /stktkfhh;i 7+lwe2lr7(ziking circuit diagram, which one of the bulbs will not light? 7krnu+k;i7i6t iklf l( /e;h5h2 tzws

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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 initialz2g;x*wu: os dly I. The switch in the circuit then is closed.d ;g2swoz :*ux 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 have ide,vwmib69 5+;f ypl ub/;htoxuntical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ +oh vb /;wx;59b u6fult,yimp. 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 shownojct)n +6a-*e/34p uxoknh: bllbw.v , all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the proper ranking of the bulbs’ brightn/twcbbno*lxv )hju4p +o -a el.n6 :3kess?

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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