List of top Geology and Geophysics Questions on Scalar and vector potential fields

A scalar potential \( \psi \) of a vector field \( \vec{F} \) satisfies the Laplace equation \( \nabla^2 \psi = 0 \) in free space. \( \psi \) can be uniquely determined at any point inside the closed surface \( S \) using:
Which of the following statements related to an equipotential surface is/are CORRECT?