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Unformatted text preview: 54. (a) Since the ﬁeld is decreasing, the displacement current (by Eq. 32-38) is downward, which produces
(by the right-hand rule) a clockwise sense for the induced magnetic ﬁeld.
(b) See the solution for part (a).
(c) and (d) We write E = Ez k = (E0 − ξt)k where ξ = 60000(V/m)/s. From Eq. 32-36 (treated in
id = ε0 A
= ε0 A ξ
which yields id = 2.1 × 10−8 A for all values of t. ...
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