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## Homework Statement

A solid insulating sphere of radius R carries a charge per unit volume of p. Use Gauss' law to find an expression for the eletric field on a spherical surface of radius R/2 ie: inside the sphere.

## Homework Equations

Gauss' Law = (Net Flux = Q / Eo)

Volume of a Sphere = (4/3)(pi)(R^3)

## The Attempt at a Solution

I simply combined Gauss' Law and the volume of the sphere to get,

E = (4Q) / [(3)(pi)(Eo)((R/2)^3)]

That seems to easy though have I missed something?