Ten charge are placed on the circumfereence of a circle of radius R with constant angular separation between successive charge (+q) each , whil 2,4,6, 8 10 have charge (-q) each. The potential V and the electric field E at the centre of the cirlce are respecitvely .
(Take V =0 at infinity ).

Options

A. ` V = (10Q)/( 4 pi in_(0)R), E = 0 `
B. `V = 0, E = (10q)/( 4pi in_(0)R^(2))`
C. `V = 0 , E = 0 `
D. `V = (10q)/( 4pi in_(0)R) , E = (10 q)/( 4 pi in_(0)R^(2))`