Electric Field due to Uniformly Changed Non-Conducting Sphere #8211; Suppose a charge Q is uniformly distributed in the volume of a non-conducting sphere of radius R as shown below: (i) Outside the sphere #8211; E<sub>out</sub> = Q/r<sup>2</sup> (ii) At the surface of sphere #8211; E<sub>s</sub> = 1/4πε<sub>0</sub> times; Q/R<sup>2</sup> = ρR/3ε<sub>0</sub>