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1#

94.28: Four identical lightbulbs K, L, M, and nzf.y6 7nobc4 N are connected in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the brightestfocb y z.n7n64), 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, an5:zlpkt1a pf6 48hulp f7,7+(dtiszla s:lvhd N are connected in the electrical circuit shown in the accompanying diagram. Ra p57:tlvzs i:dslh,+ t hplf4u8( lk z16fa7apnk 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 lightbu. ,ppx rvlktj9: 4t(bqlbs K, L, M, and N are connected in the electrical circuit shown in the accompanying fitpp: kbr,4jq9v l. x(tgure. 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 conneq m 2zfj8-kygsp- nn,6cted in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following statements is trk82,zgms-fj6 -qy n npue?

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 w y*a7xrf 6em1xz e63ca resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt brayxxfc*7mw1 e3z6 e6 attery 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 3*vhcouvsa;pe j b w0f;99x1hbulbs each, with a resistance of 10 ohms, are connected in a simple electrical va 10w9;3 uhsxeobcf;9hpvj*circuit 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 ammeter with zero resistanc ,fp hmr81sjnd , uq(-(w7opnle and four identical 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 pflm,qr ohus(1nw ,7 jnpd8(- 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 z gc eagv*kxydv)++.y,nr8 i4shorting 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) i4)ga nexi+grk 8vcv+z*.,dyy n 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 resistance1tgq 34n y snv7.e8hxi) connects the points laegt h317qvn siy n4x.8beled A 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 sho0x 2m,c l7ajv6kqe4v n upf;*mwn. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4u maplj7q,fcv; m*60n e k2v4x, 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 y ,hmg0 csu7m8 a circuit as shown. All wires are ideal with no resistance, and the ide7g0mmsu8h, ycal 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 va p5j7a)m,gnidentical 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, S, in the circuit is closejvma 7,n)5 gapd?

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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 lightbulbsz p73n0ut80r myq6 yqh 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 magnitude of the current at tptqqr6 3m0 7z yu80yhnhe 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 show0 c s14ez4+( vsa0ublftgpyi9n has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit t+ptgys9abv0 ecu l41zf i( 40shere, what 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 circuit diagram, which one of the bulbs will nufad/t iq ym4yo- u*+yc o-10kot light? t0/yy 4-cfy1 -uo doimq+a*k u

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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 sho jym8 5fxv/qm t u;x8/oy6orn-wn, the ammeter reading is initially I. The switch in the circuijo y8;f/ m-u6xvqoty/58 rxnm t 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, the four li:/w5d8 zfjuvq84fliu+ fqg2t ght bulbs have identical resistance, 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 resist 8 df+ / qq4ug:vzff8li52tuwjance 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, aftp5 s2.,xnfvf dob6 :*xbys. ll three lightbulbs have the same resistance. The battery and wires have no resistance. What is the2sy fbox vf:ts6.b,.*f xpdn 5 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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