1. The problem statement, all variables and given/known data (a) A ring with charge Q and radius R is in the yz-plane and centered on the origin. What is the electric potential a distance x above the center of the ring? (Use any variable or symbol stated above along with the following as necessary: k.) (b) Derive the electric field from this relationship. (Use any variable or symbol stated above along with the following as necessary: k.) 2. Relevant equations V = U/q U = -qEr E = kQ/r2 r = (x2+R2)0.5 3. The attempt at a solution I got problem (a) correct. I combined the above equations which resulted in kQ/r kQ/(x2+R2)0.5 For (b), it wants the answer in i + j + k. j and k are 0. V = qEr/q V = Er E = V/r E = kQ/r2 E = kQ/(x2+R2) This is not the correct answer for i. The problem is due in 1 hour, 30 minutes.