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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 connected in the electridy6x fra;x 7j(r knue(g 7k a9qr55.zjcal circuit shown in the accompanying6 5jj.a dr u ayxfx(nrer;kq7g9 7z5k( 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, ;k ( dw2mu3p.do4pt,r g kbme:L, M, and N are connected in the electrical ciob;:gwd (pk3 um. 4dk2mp,er trcuit shown in the 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 lightbulbs K, L, Mqdbiub66lev8/: h ryx l)-zc l0l*o9k , and N are connected in the electrical circuit shown in the accompanying figu* i6lyb08e6oh ukl-q9z)blx r:dclv/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, and N are connectedjv,x u f5fa*c,gi1br - in the electrical circuit shown in the accompanying figure. Bulb K burns out. Which of the following sr,b1augf 5c*, j f-ivxtatements 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 8mdnath7/,f u bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt battetn a,7/ hm8ufdry 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 a4 axu; 9c9cusbulbs each, 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 diag94ac9 ;x ucausram 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 and fooi;h; ;,8p4t .xgbi n2fpjtyfur 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 true4hp 2; ;bgiyx 8otpt.;fni,fj 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 shortint3-*a6wjrragc 1gs ,pg wire of negligible resistance is added to the circuit between points A and B. When this shorting wi*w 3 g6tgaap js,-r1rcre is added, bulb #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) connecya1k-l:zibyb wv:9w/ (f z//g bw kl6ets the points labeled A and B, which of the numbered lightbulbs become brighter? Assume that all four bulbs are identicz1eya(kz/vb 6/f:l 9wl-k by/: gbwiwal 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 cct/e/xr q1xm7 onnected as shown. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulbex xc/mrq7 /t1(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 connecteo6tvy yv isx8zyj2ok ch34r4qa22k* :d into a circuit as shown. All wires are ideal with no resistance, and the ideal battery has emf ξ . Whek4 c6yvv2*k2har3y q8i toszy 2: ox4jn 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 0.mlu1dhthx0mll ;c8 bulbs have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the following choices correctlm0xtd;.hchll m08l u1y identifies the light 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 haq( n ;ue);mw/zhizj 3jve identical resistance,the battery is ideal and all wirq zm(ihe ) jj3uz;n;w/es 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 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 has6u)am)lf -b z 3f6ydtw ( 1cxyvxm69zt 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happe1)-c x dmwv ma6ffu( 3b y9x6ztzl)ty6ns 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, whdxbm0d l axrut,nc*6 mag3ih3 s: p+6+ich one of the bulbs will not light? mpgd 3d+x* r+bta3hlxm6, cani6u:0s

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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, theag;6 f+s9 gkoh ammeter reading is initially I. The switch in the circuit then is closed. Consequently: of6g;g9k has+

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 resistance, ac1fbr +pbi*(r *otyg :ll wires have zero resistance, and the battery is a*i:*ty b1ofg rc+p(brssumed 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 lightbulbs have the q rh kn9cl84r:n i2l, n6yuln 9ox(,c39ydtd osame resistance. The battery and:n,r coltun3 6k (4ydnr dclx,98ylh29nioq 9 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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总分:18分及格:10.8分时间:不限时

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