Physics Electrostatics Level: Misc Level

Consider a region in space where where a uniform electric field E=7500 n/c points in the negative x direction. (a) what is the orientaion of the equipotential surfaces. (b) if you move in the positive x direction, does the electric potential increase or decreas. explain.(c) what is the distance between the +14-v and the +16-v equipotenentials.