Question

Consider the following arbitrary fields. Find out which of them can possibly represent electrostatic or magnetostatic field in free space: (a) A =ycos ara, + (y + e X)e: (b) B = 20 #, (c) C = r2 sin 0 a0'

Answer 1

The 'static' fields are not time or position-dependent, so, option B seems to be the correct one.