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?作业考试练习?美国物理杯赛(Physics Bowl)?Combine Problems

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习题练习：Combine Problems

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作者: admin 发布日期: 2024-08-22 15:24 总分: 18分得分: _____________

答题人: 游客未登录开始时间: 24年08月22日 11:37 切换到: 整卷模式

1#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

94.28: Four identical lightbulbs K, L, M, and N are connec6hvmyxtm(8yh p, rl2vz.i0* 7zuh0i pted in the electrical mi u.6z*t zhpv7phr mx,hiyv 20l(8y0circuit shown in the accompanying figure. In order of decreasing brightness (starting with 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, M, and N are connected u9ysbe372c kw in the electrical circuit shown in the accompanying diagram. Rask9c wb2e u73ynk 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 identica9py5bpw1m hp8 l lightbulbs K, L, M, and N are connected in the electrical circuit shown in the ac phywpp1m58b 9companying figure. 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 ar kgfl uf0is8y1(+pt liw .k w4e8ymi(6e connected in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the folll+mf y4 t(s.i8kkfww g08e l61puii(yowing 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 m sgb99w11lcg do(fc(a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battery as shown in the d l(o g9 w11mf(bcc9gdsiagram 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 lin vu2r2l j(s16r d7tsrght bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch an6(7vr2sr2t 1uj lsdrnd 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 resistan05r-:xk ak ck,*wiyrxce 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 sa0rxkckr 5 wixy, :*k-tatement 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 rdnxzey 7vw6q 5m0( o(is added to the circuit between points A and B. When this shorting wire is added, dv5rz( m ew6n (0x7oqybulb #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 resistance) connects tz dbug*lk:, lz;-on964pbaki he points labeled A and B, which of the numbered lightbulbs become brighter? Asdn,lug9b z6z kl ;-p:ia4bo *ksume 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 identica6;q lst pgj01el. When the switch in the circuit is closed illuminating g ets ;l0pj6q1bulb #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 shown. -zwo7q /ciz*p 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 q7wicop- zz/*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 identicy6s s/67cyjtk f3bm :eal resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctly identifies the ligeyk s:3f67/cjb6mty sht bulbs that either 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 identicafwz16jpd. 4u8nl c/jq bh /cq,l resistance,the battery is ideal and all wires have no resc u.8pblf1j hqqjc /nd6z, w/4istance. 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 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 bule8jl 84 lmg tct:f7qy4ix n67ubs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the volta748n4emcju y 86 glitftlx7: qge 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 bu(b 2m-q+.xk 4t ;v ulct0ytilplbs will not light? +tbt i.y; kll-cm pxq(0v4t2u

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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 f/ 9x *jyavdzl(yjbuylc96v- (n5ab +ammeter reading is initially I. The switch in the circuit then is closj9 dlbljyba*6c v +v5xy/zyn(f (au-9 ed. 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 identical r f179k se7vy2 1yokmugesistance, 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 the light bulbs will b 721ym97feo vus1kkyge 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 resistance.:keb alr):j,j The battery and wires have no resistance. What is the proper ranking of the bulbs’ bright:ja r) jlbke:,ness?

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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姓名:游客(未登录)

总分:18分及格:10.8分时间:不限时

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