1. The problem statement, all variables and given/known data I am basically given a cone with uniform volume charge and told to find the area of highest electric potential. 2. Relevant equations I want to use the equation: V= q/4piEr 3. The attempt at a solution I am having trouble finding anything in my book. I am comparing this in my mind to a sphere and wondering if it would be prudent to find the center of mass of the cone and place a point as close to that as possible. I am just unsure if a cone of uniform volume charge is similar to a sphere of uniform volume charge in that it acts like a point charge outside of the volume. I can't seem to find any information on this.