For static (time-independent) fields, which of the following current densities arepossible? (a) J = 2x'ya, + 4x'z'a,
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For static (time-independent) fields, which of the following current densities arepossible?
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(a) J = 2x'ya, + 4x'z'a, 6x'yza. (b) J = xya, + y(z + 1)a, + 2ya, (c) J a, + z cos o a. sin e (d) J
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