(a) Confirm that (r) = r E and A = 1/2 r B are acceptable...
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(a) Confirm that ϕ(r) = −r · E and A = −1/2 r × B are acceptable scalar and vector potentials, respectively, for a constant electric field E and a constant magnetic field B.
(b) By direct computation of B = ∇ × A and E = −∇ϕ − ∂A/∂t, prove that the generalizations of the formulae in part (a) to arbitrary time-dependent fields are
Transcribed Image Text:
·S (r, 1) = -r. dλ E(λr, t) A(r, 1) = -fdx² 0 dλ λr x B(λr, t).
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