Question

Electromagnetic waves are produced by

• A. a static charge
• B. a moving charge
• C. an accelerating charge
• D. charge less particles

Answer 1

Answer: (C)

an accelerating charge

Answer 2

Electromagnetic waves are produced by an accelerating charge.

Electromagnetic waves are produced wheneverelectric chargesare accelerated. Or in other words, an accelerating charge produces a changing electric field which in turn produces amagnetic field. These alternatively changing magnetic and electric fields give rise to electromagnetic waves. The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other.

Therefore, option C is the correct answer.