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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 lightbulb4j ufz nl6sex cdo-)8n*c)tp2s K, L, M, and N are connected in the electrical circuit8tc)4*)p l2-xfndeo n6u cszj 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 lytocm h7wrh-t+,0. tr ightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying diagram. Rank the current througtthm,.-r0 7o+ryc twhh 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 identical6antyxs2 u q*hsyeu+(* 1rq,uhf,p .u lightbulbs K, L, M, and N are connected in the electrical circuit shown in the accompanying figure. Bulb M burns out. Which ofet6h r(qy ,u uqn1a s+.p*f*,uu2yshx 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 tu(g g.w7csc77vz-m rN are connected in the electrical circuit shown in the accompanying figure. Bulb K burns z .gg7swccu7m v(tr7- 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 light bulbs each, with a resistance lv qbus u+swjd(m1 ,4.of 10 ohms, are connected in a simple electrical circuit with a switch and a 10 volt b+qds.u(jv ,sw 41lub mattery 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 jpu51n cek :*hlight bulbs each, with a resistance of 10 ohms, are connected in a simple electrical circu5e uj:p k*1nhcit 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 cy61 m/se c*ecq ut4(p w(tzq.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 that poin cqt4 (ue61 ze*p.q( wmcytc/st. 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, iy x34;sdgj n.xl1at-p66fpaa shorting wire of negligible resistance is added to the circuit between points A and B. When this shorting wire is added, bulb.4xjt1ag pnl3xysa-d6 ; ifp6 #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) connx(n(:3qq 6x-k 1iwt dyic2tldit6z .zects the points labeled A and B, which of the numbered lightbulbs becom -nz l6xiitt6twd3y.c1 iq2:zd q( k(xe 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 shoz7jgk+h(1 ngax ijo1,wn. All lightbulbs are identical. When the switch in the circuit is closed illuminating bulb #4, which other bulb(s) also become hgi z nj(1 aok1x,7+gjbrighter?

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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 a n1x7q;** bvhc1sxo g are connected into a circuit as shown. All wires are ideal with no rb* 1;xhxvc7sqn1oga * esistance, 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 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 bulbs54)ie vdo1cp u have identical resistance, the battery is ideal, and all wires have no resistance. Which one of the follo )od4uv5i1 epcwing choices correctly 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 have identical resista83tvn - rkod(nnce,the battery is ideal and all wires have no resistance. After the switch, S, in the circuit i- (n kdor3ntv8s 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 showoe9n;c a1qf5pyw 4fk*n has 4 identical light bulbs connected to an ideal battery. If bulb #2 were removed leaving an open circuit there, what happens to the voltage acro5fqa ;we9pco4 *f kny1ss 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 wil:dld /e y(nf/m3pwd1f l not light? /:y/d3dpnflf (wedm1

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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 ssnyvurd) ( 5eg4ibagi:- 8s /ahown, the ammeter reading is initially I. The switch in the circuit then is closed. Conseyan(8 b)svrgea/5: -iisudg 4quently:

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 idevfyre6e8 0m suh2h0g9ntical 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 ci 6s0e09 h8e myhfvu2rgrcuit. 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 same resistx p 3s.h0kpn5vance. The batterynh3v0p5sxk.p 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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