Which among the below given statements are correct in accordance to the properties of a conductor?

A. The static electric field intensity at the surface of conductor is directed parallel to the surface.

B.  The static electric field intensity at the surface of conductor is directed perpendicular  to the surface.

a. Only A is correct

b. Only B is correct

c. Both A & B are correct

d. Both A & B are incorrect

ANSWER: Only B is correct

Explanation:

Conductor develops an equal potential throughout the surface and the static electric field intensity within the inner portion of a conductor is zero. Thus, the properties of a conductor implies that the static electric field intensity over the surface of a conductor is directed equally and normal (perpendicular) to the surface.