sample-final

Sample-final - Exam Name MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question Figure 22.3 A point

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Figure 22.3 A point charge Q = -12 m C, and two other charges, q 1 and q 2 , are placed as shown. The electric force components on charge Q are F x = +0.005 N and F y = -0.003 N. 1) In Figure 22.3, charge q 1 , in nC, is closest to: A) -200 B) +200 C) +600 D) +400 E) -400 2) In Figure 22.3, charge q 2 , in nC, is closest to: A) -640 B) +320 C) +640 D) +480 E) -480 Figure 22.8 3) In Figure 22.8, a small spherical insulator of mass 12 x 10 -2 kg and charge +0.600 m C is hung by a thin wire of negligible mass. A charge of -0.900 m C is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle q with the vertical (see drawing). What is the angle q? A) 15.6 e B) 11.7 e C) 18.0 e D) 21.2 e E) 10.4 e 1
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Figure 23.1 A nonuniform electric field is directed along the x-axis at all points in space. This magnitude of the field varies with x, but not with respect to y or z. The axis of a cylindrical surface, 0.80 m long and 0.20 m in diameter, is aligned parallel to the x-axis. The electric fields E 1 and E 2 , at the ends of the cylindrical surface, have magnitudes of 6000 N/C and 4000 N/C repsectively, and are directed as shown. 4) In Figure 23.1, the charge enclosed by the cylindrical surface is closest to: A) +0.6 nC B) -2.8 nC C) +1.4 nC D) -0.6 nC E) +2.8 nC 5) When there is a net static charge present on a perfect conductor, and no other charges are present A) every point throughout the entire conductor will be at a constant potential, but not necessarily at zero potential. B) the electric field inside the conductor need not be zero if the conductor is hollow. C) the surface charge density will be greatest where the conductor is flat and smallest where there are sharp protuberances or points. D) every point throughout the entire conductor will be at zero potential. E) the charge will be uniformly distributed over the outside of the conductor (i.e., the surface charge density will be constant).
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This note was uploaded on 04/08/2011 for the course PHYS 2A taught by Professor Hicks during the Spring '07 term at UCSD.

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Sample-final - Exam Name MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question Figure 22.3 A point

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