The pattern of isolines of potential for the gravitational field of the Sun-Mercury system is identical to the pattern of equipotential lines for a system of two electrically charged objects with D. the charges have opposite signs and different magnitudes.
What does the pattern of isoline show ?
Isolines of potential represent surfaces with equal gravitational potential energy in the Sun-Mercury system. Equipotential lines represent surfaces with equal electrical potential energy in a system of charged objects.
The pattern of both isolines and equipotential lines is determined by the inverse square law, meaning the strength of the force (gravitational or electrical) decreases with the square of the distance from the source.