Electromagnetic waves are produced by (A) a static charge (B) a moving charge (C) an accelerating charge (D) chargeless particles

Electromagnetic waves are a type of wave that consists of oscillating electric and magnetic fields. These fields are perpendicular to each other and to the direction of the wave's propagation. In order to create an electromagnetic wave, we need a changing electric or magnetic field.

To determine which type of charge produces electromagnetic waves, we need to examine the behavior of static charges, moving charges, and accelerating charges. (A) A static charge is not changing in time, and thus cannot create the changing electric and magnetic fields required for an electromagnetic wave. (B) A moving charge, while not static, still has a constant velocity. This means that the electric and magnetic fields will also not change with time, and therefore, this charge cannot produce an electromagnetic wave. (C) An accelerating charge, on the other hand, is changing its velocity which results in a changing electric and magnetic field. As a result, an accelerating charge can generate electromagnetic waves.

(D) Chargeless particles do not inherently possess electric or magnetic fields. As a result, they cannot produce electromagnetic waves.

Based on the analysis of the behavior of static charges, moving charges, accelerating charges, and chargeless particles in relation to their ability to produce electromagnetic waves, the correct answer is (C) an accelerating charge.