1. The problem statement, all variables and given/known data You start at a distance r from a point charge. The electric potential is 4500V at that point, and the electric field is 2.3x105N/C. a) What is r? b) What is the electric potential and magnitude of the electric field at a distance of r/4? 2. Relevant equations v= kq/r E=kq/r^2 substitute everything and get q= v^2/kE? r=kq/v solve for q which will then allow you to solve for r? 3. The attempt at a solution V = 4500, k = 8.9x10^9 and E = 2.3x10^5 that will give us a q This q will then be put into the equation r=kq/v and that will give you the answer for a? Part b would you take that distance solve for the magnitude and e-field?