Coulomb force
The electrostatic force of attraction or repulsion exerted by one charged particle on another, in accordance with Coulomb's law.
Unit and formula
Unit : newton (N) Fe=k.|q1.q2|/r where q1 is the carge 1 in coulomb, q2 the charge 2 in coulomb, r the distance between the two charges in meters and k the constant k of the Coulomb's law.