👉 In physics, a coulomb is a unit of electric charge that was introduced by Pierre-Simon Laplace in 1823. It is defined as the product of the electrostatic force between two charges and the inverse square of the distance between them (Coulomb's law). The Coulomb constant is approximately 9 x 10^9 N m^(-2)/C^2, where N is the number of coulombs in a mole and m is the
