a solid conducting sphere carrying charge q has radius a. it is inside a concentric hollow conducting sphere with inner radius b and outer radius c. the hollow sphere has no net charge. take v = 0 as r→[infinity]. use the electric field for this system: e(r)=⎧⎩⎨⎪⎪⎪⎪⎪⎪⎪⎪0forr≤akq/r2forac to calculate the potential v at the following values of r.