Question

Two charges $2\mu C$ and $-2\mu C$ are placed at points $A$ and $B$ apart.
What is the direction of the electric field at every point on this surface?

Answer 1

$\bullet$ For the given system of the two charged, the quipotential surface will be a plane normal to the line $AB$ joining the two charges and passing through its mid-point $O$. On any point on this plane, the potential is zero.

$\bullet$ The electric field is in a direction from the point $A$ to point $B$ i.e., From the positive charge to negative charge and normal to the equipotential surface.