(A) Find an expression for the electric potential at a point P located on the perpendicular central axis of a uniformly charged ring of radius a and total charge Q.
(B) Find an expression for the magnitude of the electric field at point P.
(A) Find an expression for the electric potential at a point P located on the perpendicular central axis of a uniformly charged ring of radius a and total charge Q.
(B) Find an expression for the magnitude of the electric field at point P.