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1#

94.28: Four identical lightbulbs K, L, M, and N are conne tis -zma)18wucted in the electrical circuit shown in the accompanying figure. In order of decreasing brightness (starting with the1isw8m - zatu) 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, M, and N are connected in the elec f/yvjvs7t;z7b 7 xcuzv +*e( eh/miv4trical circuit shown in the accom(eyms c;zt *7xz+uv74vbv f eihv/7 j/panying 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, an9:iytu2qtcc/t6 i84e rlbss )d N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which of the following st /48) ttr2yiiscc:6slbt9 ueqatements 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 lightbu2 /x )lv9id,j;ebi1kgh-nm*xtf o k9llbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb K burns out.j1 tvolnhb ,-g;fx9 ile/29)*imxdkk 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 ohms, are g;s: tlz*q6x vconnected in a simple electrical circuit with a switch and a 10 vo zg;vq:s* xlt6lt 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 resistance of 10 od- 6g,ufnv( xej v6cn5hms, are connected in a simple electrica6 x-( cn,gvud n5fje6vl 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 resistance an;e4)g)e1ux .rdkr gy vd 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 true of the circuit after removing t4x1 ) gr)yeue.rgv dk;he 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 neglig i4 l-( zjxkxv13(rdvhible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb #3 goes out. Which4h(v1lxk 3-z( ijrdvx 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, whensz0btp3-pmz +27c.lhyetow 8 a shorting wire (no resistance) connects the points labelt 0+ z 8 yhspepcz2l-bwmo3t.7ed 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 shown. All lig i2fpdi d6l9l;;aq.5w, 0 x33nh6ppndlqtrnt htbulbs are identical. When the swididw ,lp3 6rt;lif6x5hpaql. n930tnp d2qn;tch in the circuit is 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.ei5 uyjzda gs cw3dl8),*zb3 are connected 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 closeliejyzdz83 wc*,b3g.s5 )daud, 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 resistd *xz)bxa:vpa8h- 7 z0xbfc,ecps- i8ance, 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 when7,bc0xsad iac -heb xf8z:p) z* p8-vx 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 lightbulbs7 - g x wq)78n:.7krzmhmulwhm 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 correctln.rmm87l mgzx7k-q:h h7 ) wwuy 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 identical light bulbs connected to an ideal battj yv+c)v)3zfj ery. If bulb #2 were removed leafz )vcy+3j v)jving an open circuit there, 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 diagr gp81to- he6-;hrdsqm am, which one of the bulbs will not light? -p1-o shqrg m dh8;e6t

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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 initially I. The switq cfm2oxr;:f5ch in the circuit thrfx m5c;:oq 2fen 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 lightdp- 7 sdlley-(di(fz7a4nof 7 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 resistance is added into the circuit. Which of t(donl-dyis 7fal-e7( d 4pf7zhe 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 lightbulbs have the same resi2,p a skzvd0 /w0gafvaos6 1kt,yy .g6stance. The battedzgy, k6ypakfa, 1 t.sv0v2s0ao6gw/ry 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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