Answer Happy

A spherical charge distribution has a volumetric charge density
that is a function only
of r, the distance from the center of the distribution. In other
words, p = p(r). If p(r) is so, determine
the electric field as a function c!'e r. Integrate the result to
get an expression for the potential
electrostatic <p(r), subject to the constraint <p( =) =
O.
a) p = A/r where A is a constant for O .;; r.;; R;
p = O for r > R.
b) p = Po (ie constant) for O;; r';; R;
p = The stop > R.