Electromagnetic waves are produced by

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(C) According to Maxwell's theory,a charge at rest produces only an electric field. $A$ charge moving with uniform velocity produces both an electric

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accelerated or decelerated charges only

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(C) According to Maxwell's theory,a charge at rest produces only an electric field. $A$ charge moving with uniform velocity produces both an electric and a magnetic field,but these fields do not vary with time in a way that generates electromagnetic waves. When a charge moves with acceleration or deceleration,it produces a time-varying electric field and a time-varying magnetic field. These time-varying fields propagate through space as electromagnetic waves. Therefore,electromagnetic waves are produced by accelerated or decelerated charges only.

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