Assertion: Lines of force are perpendicular to conductor surface.
Reason: Generally electric field is perpendicular to equipotential surface.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
A.
If both assertion and reason are true and reason is the correct explanation of assertion.
The electric field lines are perpendicular to its surface, ending or beginning on charges on the surface.
Above figure shows electric field E is applied to a conductor, free charges inside the conductor move the field is perpendicular to the surface.
(a) The electric field is a vector quantity, with both parallel and perpendicular components. The parallel components (Ell) exerts a force (Fll) on the free charge q, which moves the charge until Fll = 0
(b) The resulting field is perpendicular to the surface. The free charge has been brought to the conductor's surface, leaving electrostatics forces in equilibrium.
Equipotential lines are always perpendicular to the electric field. In three dimensions, the lines form euipotential surfaces
