PHYS-102-Q-I-SOL-SPR-11

PHYS-102-Q-I-SOL-SPR-11 - OUTLINE OF SOLUTIONS PHYS-102...

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OUTLINE OF SOLUTIONS PHYS-102 QUIZ-I Time allowed: 50 min. Notes: 1. For Prob.1 please circle the answer of your choice for each part. 2. For problems 2 and 3, your solutions must have adequate details and the answers must have proper units to get full credit. 3. Symbols in bold type are vectors. ________________________________________________________________________ Name ____________________________ Rec. sec. #__________ ________________________________________________________________________ F E = q E ; ; 1/ 4 πε 0 = k = 9 x 10 9 Nm 2 C 2 , ; ε 0 = 8.85 x10 -­૒12 C 2 /Nm 2 V sp = 4 π r 3 /3 S sp = 4 π r 2 λ = q/L ; σ = q/A ; ρ = q/V ____________________________________________ ___________________________ (Please read the Quiz Grading Guidelines at the end of this document, especially if you are thinking about getting your quiz regraded.) PROB. No. SCORE 1 2 3 Total
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Prob. 1 (3 pts each part ) ( please circle the answer of your choice for each part [I] –[IV]). [I] A dielectric sphere of radius R is placed in a uniform electric field of magnitude E, as shown. The net electric flux through the sphere is equal to: [a] zero, [b] 4 π R 2 E [c] π R 2 E [II] Two equal positive charges are situated symmetrically about the origin as shown. The net E -field at point P on the y-axis will point: [a] along the positive y-axis. [b] along the positive x-axis. [c] The E -field at P is zero. [III] Two point charges q 1 and q 2 are situated symmetrically about the origin. The E -field measured at the origin is zero. At point P, the E -field
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