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1#

94.28: Four identical lightbulbs K, L, M, and N are connected ineeccv35./f lee5a z7z the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with . 573ee zlce/e acvzf5the 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 lightbulbsw x2at0coiwtr80iychv +4 6a4 K, L, M, and N are connected in the electrical circuit shown in the+8y62titx 4iwr0va co4 hcwa 0 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 wdp(-nyyc14t:yus1pxc/ 5og lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure: p( 1cu 5 y1ytwcxpoydgn/-s4. 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 :jay/i r 2l,pw+3jr (e(vyuwfqgr3u:K, L, M, and N are connected in the electrical ev(jwra gly:qrip:,+f w(yr23u ju/ 3circuit shown 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 lia1 :0 awyg u 7)p4azo,bmlqb4sght bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit wizbqpma47,w4uls b0ga1)o : ay th 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 +r d(hw- 3nkkzbwr n*6light bulbs each, with a resistance of 10 ohms, are connected in z+krwbd hn6w3 r-kn(*a simple electrical 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 is bhl-jh7b:h;deal ammeter with zero resistance 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 ; bl-h:7bshj hthat 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 negligible resistance is apq jvgzp9djpg64p(b2 a 5x2e.dded to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out.zjapp4j26b5pvgp x d9g q2 (e. 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 resistance) connects tyoj1pq sw-d y3en0qvz e 0a6:5he points labeled A and B, which of the numbered0-:a51e6pdoj n q3qwzve0s yy 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 connca,r m-w/o -3nmgl0couf l/g7lg d2p( ected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) c-omnol(-g7m0 dlwlc p /,u32ga/f rgalso 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 connect-e c 7jxzqs36dyrm1e *ed into a circuit as shown. All wires 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 brig637 -e*cqdeszm1xyrj hten?

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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 rd6j5 k n+5thtmesistance, 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, i5h+56mk tnt djn 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 haetvyj5d68f9a4b 3d tnr uh7)qve 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 the point d)ey u4 qthj 3t8rv7a5b dnf69labeled 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 bul:z02p mc32j2t xgcped bs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage across both bulb #1 and f:c pcptxj m2g 23ez0d2rom 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 nr.zd oo.m hw+k9)ny*2 kdc4jof the bulbs will not light? oj+kdwc.4 k. ynm9 h2 )*dozrn

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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 nq0ix+f; ez0wt shown, the ammeter reading is initially I. The switch in the circuit then is closed. ;00qfnzeiw+ x 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 bukrjbmlfszi e t(+u rh0k/ i6hj:t 5;0+lbs have identical resistance, all wiresjlkh m0err+5;:+i st(itjhkfbz 60u/ 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 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 lightbulbsv 12xq f0 se7utwrqrk +nw bgvt(3x8/: have the same resistance. The battery and wires have no resistance. What iw etgb rvrwx28sfk:03n(qv tq+u /1x7 s 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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