1. The problem statement, all variables and given/known data Determine the E-field from an electric dipole with charges Q and –Q, at a distance d, assuming the potential V is known. (Hint: Use gradient in spherical coordinates and place the dipole in a suitable way) 2. The attempt at a solution Since no other charges are mentioned, I'm assuming I can use superposition for this, so: http://img26.imageshack.us/img26/2528/dipole.jpg [Broken] What I need help with is figuring out ^R, after which I'll simply add the two expressions together to find the final result. This completely skips using V for any of the steps, but I'm pretty sure the teacher won't dock us for that.