A nonconducting sphere has radius R = 2.70 cm and uniformly distributed charge q = +7.00 fC. Take the electric potential at the sphere's center to be V0 = 0.
(a) What is V at radial distance r = 1.45 cm?
(b) What is V at radial distance r = R?
E = Vdv
V = k (q / r)
The Attempt at a Solution
I was about to just integrate E from zero to r1 and then r2, but then I realized that as r increases, so does q so I can't just have a simple single integration. And then I didn't know what to do. Help? Thanks.