Coulomb's law
a physical law that states the electric force between two point charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. / From Wikipedia, the free encyclopedia
Coulomb's law is a function developed in the 1780s by physicist Charles-Augustin de Coulomb. It explains how strong the force will be between two electrostatic charges. Electrostatic means electric charges without any motion.