question_answer

The maximum electric field at a point on the axis of a uniformly charged ring is \[{{E}_{0}}\]. At how any points on the axis will the magnitude of the electric field be\[{{E}_{0}}/2\].

A) 1                     

B) 2

C) 3                     

D) 4

Correct Answer: D

Solution :

[d] Four points as shown.