Question

Why electric field lines are perpendicular?

Answer 1

Answer:

electric field line are perpendicular because if they are overlapping the would give two directions which isnt a possibilty in practical life

Explanation:

Answer 2

this is because there is no potential gradient along any direction parallel to the surface , and so no electric field parallel to the surface. This means that the electric lines of force are always at right angle to the equipotential surface.