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A point charge is an idealized model of a charged particle that has a negligible size compared to the distances involved in its interactions. It is characterized by its charge (positive or negative), which determines the nature of the electric field it generates. The electric field produced by a point charge radiates outward (for positive charges) or inward (for negative charges) and follows an inverse-square law, meaning the field strength decreases with the square of the distance from the charge. Additionally, a point charge does not possess any physical dimensions or shape, allowing it to simplify calculations in electrostatics.

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