1. The problem statement, all variables and given/known data You have an electrically charged sphere. The strength of an electric field 0.1 m away from the center of the sphere is 30,000 N/C. The radius of the sphere is 0.05 m. What is the electric charge (Q) of the sphere? 2. Relevant equations E = F/q - E = -V/d 3. The attempt at a solution I don't know how to attempt this problem, I'm not even sure if these equations are relevant. Someone please help.