Coulomb's law quantifies the magnitude of the electrostatic force exerted between two stationary point charges. This fundamental principle of electromagnetism states that the force is directly proportional to the product of the two electric charges and is inversely proportional to the square of the distance between them. Mathematically, the force follows an inverse-square relationship, meaning that if the distance between the charges is doubled, the force diminishes to one-fourth of its original strength. The law establishes that like charges exert a repulsive force, while opposite charges attract each other.