1. The problem statement, all variables and given/known data i have a sphere with center at origin that is partially empty inside with a non-uniform charge. i have 2 arbitrary points outside the sphere. find the difference in potential between the 2 points. 2. Relevant equations 3. The attempt at a solution 1) find total charge of sphere 2) assume it is a point charge at origin 3) the electric potential is equal at r distance from origin, so i took abs of 2 points and subed it in for distance 3) use the voltage equation (Efield*r), charge being from 1) and distance being from 3) 4) subtract the two to find difference is something wrong with my steps? im not writing my step by step throughly puncuated explanation again. auto-log out made me lose it. also stressful week.