Question

The source of electromagnetic waves can be a charge -

• A. Both options $\left(\text{A}\right)$ and $\left(\text{B}\right)$
• B. None of these
• C. falling freely in an electric field.
• D. moving in a circular orbit with constant speed.

Answer 1

The correct option is A Both options $\left(\text{A}\right)$ and $\left(\text{B}\right)$

An accelerated charge particle is the source of an electromagnetic wave.

A charge particle falling in an electric field is acted by electric force, hence it is accelerated.

Also, a charge particle moving in a circular orbit with constant speed is in accelerated motion as its direction changes at every instant.

Hence, option $\left(\text{C}\right)$ is the correct answer.