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1#

94.28: Four identical lightbulbs K, L,+i 9syh;pae ljf- p;s9 M, and N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the bris9p-fa;es l hjy+p9i;ghtest), 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 lightbulbrhy+1 wg j +oht9wnl3.s K, L, M, and N are connected in the electrical circuit shown in the accompan t3.y jw+ gwh+19olrnhying 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 light +0xal;yoz zr:bulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figuz;l:ar yz ox0+re. 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, a /0vnpo)s5fw qnd N are connected in the electrical circuit shown in the accompanying finq fv)o5 w0/psgure. 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 identicazv5y4e v j1k c(;cq oadfsw+;.l light bulbs each, with a resistance of 10 ohms, are connected in a dv 1v;scqyz;4ojc5a+(f. ke wsimple 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 rym7w6h32 nta, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the diagr326arw 7htny mam 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 resisqccl*e u- 8: iwk2u)rwtance and four ident u 8wweqi)*r:uc2klc-ical resistance light bulbs which are initially illuminated. 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 shownedul( h-cm 6;k/;kosd , a shorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which bulbs (all identical) in the circuit br -; 6 ;c/mhduek(odslkighten?

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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 resistance) conn ,zqupv*)n .sqects the points labeled Ap.q unq)z*sv, and B, which of 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 connected as shown. All lightbulbs are identical. When the s8ke7hb lk 3 gjrj0vqp 496li 5lo ,vmz)6uw8rrwitch in the circuit is closed illuminating bulb #4, which other bulb(s) zwohl vp8i94kqv73b r rm,ug j650 l) 8eklj6ralso 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 bulcrw;eq*/ :)tg c (fl-6t drldfbs are connected into a circuit as shown. All wires et() :dw; t6 *crrf/ cqld-lgfare 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 identical resist, cy) :vie.+biq2 nordance, 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 ,iye:2+b.cn )id qo rvgo 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 identical resistlb w+cyfcf6 o *m:u 4lpqm:v)-ance,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 curren - pycffucl v)qmmo+:6*wb:4l t 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 bulbs connected to an i 2tvvx2+++sqa 0hy ebcdeal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 andy0 qsc2 hx2 +eav++bvt 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 circui 0 5(tvtpizm+9vt ux6gt diagram, which one of the bulbs will not light? um vttvzt9p+ix (g60 5

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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 read-- ; cet )d2fs7bf:a)t uddgrying is initially I. The switch in the circuit then is closed. Con7s2f :-ya dbed ;t )r)gc-dtufsequently:

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 hah j67yynfs i vs/c5-d sy+q;.tve identical resistance, all wires have zero resistance, and the battery is assumed to be ideal with emf ξ . When the switch,hscyyss/5- v+j.qt f in;dy76 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 shh1i64bg: aur gown, all three lightbulbs have the same resistance. The battery and wires have no resistance. What is the pro gh4: brgiu16aper 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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