2. Compute the magnitude of the electric field at a distance r from the center of a uniformly charged, insulating sphere of radius R with a total charge of Q throughout its volume, where r < R (i.e., the point in question is inside the sphere). Start by showing that the charge q that lies within a radius r is given by 9= con Next, use Gauss's law along with the equation you just derived for q to show that the magnitude of the electric field inside a uniformly charged sphere of radius R having a total charge of Q is E= 1 Or 41€ R3