He electric potential at a certain distance from a point charge can be represented by v. what is the value of the electric potential at twice the distance from the point charge?

Coulomb's Law for the electric field due to a point charge is

where
E = electric field, V
= Coulom's constant, 8.98755 x 10²
q = point charge, C
r =  distance from the pont charge, m

At distance, r, let the electric potential be


At twice the distance from q, the electric potential is



At twice the distance from the charge, the electric decreases by a factor of 4.