Draw an equipotential surface for a point charge.

Figure shows a set of equipotential surfaces. The magnitude and direction of electric field that exists in the region is .........

Draw an equipotential surface for dipole.

Draw an equipotential surface of two identical positive charges for small distance.

Prove that a closed equipotential surface with no charge within itself must enclose an equipotential volume.

The diagrams below show regions of equipotentials.A positive charge is moved from $A$ to $B$ in each diagram.