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Unformatted text preview: %m EE 325m _/
Engineering Electromagnetics ’0 0
Quiz #1
June 25, 2006 Problem #1. Four identical point charges of 4 pC each are located at the corners of a square 0.5 mm
on a side in free space. How much work must be done to move one charge to a point
equidistant from the other three and in the wlane? _,  f K I A ‘.
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Name Problem #2. A point charge of 16 11C is located at Q(2,3,5) in free space, and a uniform line charge of 5 nC/ m is at the intersection of the planes x = 2 and y = 4. If the potential at the origin is ( 0 .V m ﬁnd Vat P(4,1,3).
(Wrougp A; 38364”) BB 325 / \/ / ( 3
June 25‘} 2006 [/1 Z, 47 / / é a /)
‘ Name Problem #3. Two conducting planes are located at z = 0 and 6 mm. In the region 0 < z < 2 mm, there
is a perfect dielectric for which 8R1 = 2; for 2 < z < 5 mm, let Egg 2 5. (a)air;:319§“ F
(b) em, = 4 I)“ F
(c) an; 47% F 5
((1) copper. ‘ 1% F
{614 ML LHV V4”) /
We“ , EE 325n
June 25, 2006 Problem #4. Two concentric conducting spheres of radii a = 5 cm, 17 = 20 cm, have dielectrics 8R1 =2, 0 < 6 < n/Z, and 810:5, n/Z < 6 < 1:, separating them. Assume Em = 200 V/m at r: 10
cm, 6 : 28°, = 106°, and ﬁnd: OJ Z
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 Spring '08
 Brown
 Electromagnet

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