Quadrupling the distance between two charges results in a decrease of the electrostatic force by a factor of 16, as dictated by Coulomb's law. This law states that the electrostatic force is inversely proportional to the square of the distance between the charges. Therefore, when the distance is increased, the force diminishes exponentially. Specifically, if the distance is doubled, the force decreases to one-fourth of its original value, illustrating the principle of the inverse-square law in electrostatics.
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