Some equipotential surfaces are shown in figure. What can you say about the magnitude and the direction of the electric field?

Options

• Option A

  (a) 200 V m⁻¹ at 120° to the x-axis; (b) radially outward, E = 6/r² V m⁻¹

• Option B

  Same values with the two cases interchanged

• Option C

  Half of each stated value

• Option D

  None of these