What is Coulomb's law ?

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COULOMB’S LAW FORMULA Coulomb’s law is based on the electrostatic interaction between electrically charged particles. The law was first published by French physicist Charles Augustin de Coulomb and was essential in the development of the theory of electromagnetism. The law provides the amount of force when two charges are separated by some distance. The interaction among charged objects is a non-contact force that acts at some distance of separation. Every electrical interaction involves a force that highlights the importance of charged variables. Coulomb’s law on magnitude states that, The electrostatic force between the two charged points is directly proportional to the product of these charges and inversely proportional to the square of the distance between them.

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Coulomb’s Law is the force of repulsion/ attraction between two like/unlike charges of electricity concentrated at two points in an isotropic medium is proportional to the product of their magnitudes and inversely proportional to the square of the distance between them and to the dielectric constant of the medium.