electric field

The charges Q will be evenly distributed on the spherical surface. Suppose p is the surface charge density, p = Q/(4.pi.R^2), where R is the radius of the sphere.

Hence, electric field E = (1/(4.pi.e)).(Q/R^2) = (1/4.pi.e).(4.pi.R^2.p)/R^2
E = p/e
where e is the permittivity of free space.