Question

A circular ring carries a uniformly distributed positive charge and lies in the xy plane with center at the origin of the cooredinate system. If at a point (0,0,z) the electric field is E, then which of the following graphs is correct?
A.
B.
C.
D.

Answer 1

Correct Answer - C
The following two arguments shall leads us to right choice.
(i) Electric field at the center of the ring zero.
(ii) Electric field is directed away from the ring.