1. The problem statement, all variables and given/known data Charge 6.00 is distributed uniformly over the volume of an insulating sphere that has radius = 5.00 . What is the potential difference between the center of the sphere and the surface of the sphere? 2. Relevant equations ΔVab= -∫E*dl Electric field inside an insulating sphere is E=Qr/4∏ε0R3 3. The attempt at a solution I am not sure where to begin. I think there is some ingration with the electric field equation, but I don't know if I use the same one for the surface of the sphere.