Update electric_potential_point_charge.py

Author: SRUTIGUDURU

electronics/electric_potential_point_charge.py

@@ -1,8 +1,7 @@
 from __future__ import annotations
 
 COULOMB_CONSTANT = 8.99e9  # N·m²/C², Coulomb's constant
-
-
+"""reference: https://en.wikipedia.org/wiki/Electric_potential"""
 def electric_potential_point_charge(charge: float, distance: float) -> float:
     """
     Calculate the electric potential at a point due to a point charge.