Two point charges `+10muC and -10muC` are separated by a distance of 40cm in air. Draw an equipotential surface for the system.

Two point charges +q and -q are separated by a distance d. Except at infinity, where can the electric potential due to these two point charges be zero?

Two point charges 3muC and -3muC are placed respectively, at points A and B, 2cm apart Mention the location of equipotential surface of the system.