I4

5) In a certain region of space equipotential surfaces are equally spaced planes parallel to the xy-plane. The point (0. 0. 0) lies on the OV equipotential. The point (0. 0, 2) lies on the 20V equipotential. Distances are given in metres. Calculate: a) The electric potential at the point (0. 0, 0.5) b) The electric field at the point (0, 0, 0.5)