An electric charge in uniform motion produces

The correct answer is Option (3) → both an electric and a magnetic field

A charge always has its electric field, whether it is at rest or moving. A moving charge is also a current, and currents produce a magnetic field in addition.

Option (1) an electric field only — Incorrect. Only a charge at rest produces an electrostatic field alone. Once the charge moves, a magnetic field appears as well.

Option (2) a magnetic field only — Incorrect. Motion adds a magnetic field but does not remove the electric field of the charge, which is still present around it.

Option (3) both an electric and a magnetic field — Correct. The charge carries its electric field with it, and its motion produces a magnetic field.

Option (4) electromagnetic waves — Incorrect. Only accelerated charges radiate electromagnetic waves. A charge in uniform motion (a steady current) produces fields but radiates no waves.

NCERT (2026-27):
Sources and Fields – “Just as static charges produce an electric field, the currents or moving charges produce (in addition) a magnetic field, denoted by B (r), again a vector field.”

Sources of Electromagnetic Waves – “How are electromagnetic waves produced? Neither stationary charges nor charges in uniform motion (steady currents) can be sources of electromagnetic waves. The former produces only electrostatic fields, while the latter produces magnetic fields that, however, do not vary with time. It is an important result of Maxwell’s theory that accelerated charges radiate electromagnetic waves.”