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I read about Coulomb's law it says the force of attraction or repulsion between two charges is inversely proportional to the square of the distance between them.
So generally if I say then Coulomb's law is inverse square law. But I really want to know why this electrostatic force depends on square of the distance, and not the cube nor the fourth power. Why only the square of the distance?
Is there any connection with dimensions? Or does it depend on the reference frame? Why does it depend on inverse of the square of the distance?