1bb-quiz2 - 4) In Situation 25.1, the potential difference...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A proton with a speed of 2 x 10 5 m/s falls through a potential difference V and thereby increases its speed to 4 x 10 5 m/s. Through what potential difference did the proton fall? A) 1540 V B) 144V C) 626 V D) 258 V E) 835 V Figure 24.1 Point charges, Q 1 = +60 nC and Q 2 = -90 nC, are placed as shown. 2) In Figure 24.1, a point on the positive y-axis lies on the V = 0 equipotential surface. The y-coordinate of the point, in SI units, is closest to: A) 0.74 B) 0.70 C) 0.72 D) 0.78 E) 0.76 3) In Figure 24.1, an electron is released from rest at point C. The speed of the electron as it arrives at infinity is closest to: A) 1.3 x 10 7 B) 1.1 x 10 7 C) 1.7 x 10 7 D) 1.5 x 10 7 E) 1.9 x 10 7 Situation 25.1 Each plate of a parallel-plate air capacitor has an area of 0.0040 m 2 , and the separation of the plates is 0.030 mm. An electric field of 1.5 x 10 6 V/m is present between the plates.
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Unformatted text preview: 4) In Situation 25.1, the potential difference across the capacitor is closest to: A) 45 V B) 75 V C) 30 V D) 90 V E) 60 V 5) In Situation 25.1, the surface charge density on the plates, in m C/m 2 , is closest to : A) 11 B) 13 C) 9 D) 7 E) 15 1 Figure 25.3 The network shown is assembled with uncharged capacitors X, Y, and Z, and open switches, S 1 and S 2 . A potential difference V ab = +120 V is applied between points a and b. After the network is assembled, switch S1 is closed, but switch S 2 is kept open. 6) In Figure 25.3, the voltage across capacitor Z, in SI units, is closest to: A) 80 B) 20 C) 100 D) 40 E) 60 7) A 5.0-m F capacitor has a potential difference of 5.0 V applied across its plates. If the potential difference across its plates is increased to 9.0 V, how much additional energy does the capacitor store? A) 280 m J B) 80 m J C) 40 m J D) 140 m J 2 Answer Key Testname: 1BB-QUIZ2 1) C 2) C 3) D 4) A 5) B 6) A 7) D 3...
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This note was uploaded on 03/22/2009 for the course PHYS PHYS 1B taught by Professor Berman during the Spring '09 term at UCSD.

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1bb-quiz2 - 4) In Situation 25.1, the potential difference...

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