# Out of the following options which one can be used to produce a propagating electromagnetic wave? Option 1) A charge moving at constant velocity Option 2) A stationary charge Option 3) A chargeless particle Option 4) An accelerating charge

S Sabhrant Ambastha

$P = \frac{q^{2}a^{2}}{6\pi\epsilon _{o}c^{2}}$

q = Charge

$a$  = Acceleration of particle

c = Speed of light in vacuum

- wherein

The accelerated charge particle produce EM wave. P is total radiant flux emitted by charge at any instant.

Electromagnetic wave can be produced by an accelerating charge.

Option 1)

A charge moving at constant velocity

This option is incorrect.

Option 2)

A stationary charge

This option is incorrect.

Option 3)

A chargeless particle

This option is incorrect.

Option 4)

An accelerating charge

This option is correct.

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