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Unformatted text preview: 54. (a) Since the ﬁeld is decreasing, the displacement current (by Eq. 3238) is downward, which produces
(by the righthand rule) a clockwise sense for the induced magnetic ﬁeld.
(b) See the solution for part (a).
ˆ
ˆ
(c) and (d) We write E = Ez k = (E0 − ξt)k where ξ = 60000(V/m)/s. From Eq. 3236 (treated in
absolute value)
dEz
id = ε0 A
= ε0 A ξ
dt
which yields id = 2.1 × 10−8 A for all values of t. ...
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics, Current

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