question_answer

Ten electrons are equally spaced and fixed around a circle of radius R. Relative to V = 0 at infinity, the electrostatic potential V and the electric field E at the centre C are [AMU 2000]

A)            \[V\ne 0\] and \[\vec{E}\ne 0\]

B)                                      \[V\ne 0\] and \[\vec{E}=0\]

C)            \[V=0\] and \[\vec{E}=0\]      

D)            \[V=0\] and \[\vec{E}\ne 0\]