Sphere's Electric Potential...HELP!! 1. The problem statement, all variables and given/known data A 2.04-mm-diameter ball bearing has 8.710×10^9 excess electrons. What is the ball bearing�s potential? 2. Relevant equations 3. The attempt at a solution V = (1/4*pi*Eo) * (Q/r) Eo = 8.85 x 10^-12 Q = 1.6x10^-19 * 8.71x10^9 r = 0.00204/2 V = 12308.78 V Can someone tell me what I am doing wrong???