CH-21 WEB - Chapter 21 Gausss Law (Additional Questions) 1)...

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Unformatted text preview: Chapter 21 Gausss Law (Additional Questions) 1) Find the net flux through the cube given in figure if the electric field is given by (a) 3.00 j E y = r and (b) 4.00i (6.00 3.00 )j E y = - + + r . E is in newtons per coulomb, and y is in meters. (c) In each case, how much charge is enclosed by the cube? Solution: (a) Let A = (1.40 m) 2 . Then (b) The electric field can be re-written as 3.00 j E y E = + r r , where 4.00i 6.00j E = - + r is a constant field which does not contribute to the net flux through the cube. Thus is still 8 .23 N.m 2 /C. (c) The charge is given by in each case. 2-) Consider a closed triangular box resting within a horizontal electric field of magnitude E = 7.8010 4 N/C, as shown in the figure. Calculate the electric flux through (a) the vertical rectangular surface, (b) the slanted surface, and (c) the entire surface of the box. Solution: (c) The bottom and the two triangular sides all lie parallel to E , so E = 0 for each of these....
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This note was uploaded on 04/03/2012 for the course ENGINEERIN 12 taught by Professor Who during the Spring '09 term at Kadir Has Üniversitesi.

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CH-21 WEB - Chapter 21 Gausss Law (Additional Questions) 1)...

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