Asked by | 4th Jan, 2009, 07:43: PM
A time varying electric field acts as a source of magnetic field (Ampere's law)and a time-varying magnetic field acts as a source of electric field(Faraday's law).
Thus if either an electric or magnetic field is changing with time, a field of the other kind is induced in adjacent regions of space.
If a charged particle is accelerating, the electric field lines from it are varying in space around it. This in turn produces a changing magnetic field. So a time varying electric and magnetic field, that can propagate through space from one region to another exists.
Answered by | 5th Jan, 2009, 10:49: AM
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