$A$ moving charge can produce which field? Explain.

(N/A) moving charge produces both an electric field and a magnetic field.
$1$. Electric Field: Every charge,whether at rest or in motion,produces an electric field in the space surrounding it,as described by Coulomb's Law.
$2$. Magnetic Field: When a charge moves,it constitutes an electric current. According to the Biot-Savart Law or Ampere's Circuital Law,a moving charge (or current) generates a magnetic field in the space around it. The magnetic field $B$ at a position vector $r$ from a charge $q$ moving with velocity $v$ is given by $B = \frac{\mu_0}{4\pi} \frac{q(v \times r)}{r^3}$.