Q) A solid non-conducting sphere of radius R carries non-uniform charge distribution with charge density ρ = ρs(r/R), where ρs is a constant. Show that (a) the total charge on the sphere is Q = ∏ρsR3, and (b) find the electric field inside the sphere. Now first part (a) is fairly easy, assumed a sphere of radius x and then after further integration got the result But i need an idea for the second part.. since there is no symmetry so "Gauss" theorem is of no use applying... I think i need an integration there as well. But can someone provide me an idea on how to continue further. Thanks in advance.