Coulomb's Law Calculator

Find the force between two point charges.

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Formula

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Formulas

F = k × q1 × q2 / r²

k = 8.9875 × 10&sup9; N·m²/C²

Coulomb's Law

Describes the electrostatic force between charged particles. Like charges repel, opposites attract. Force is proportional to the product of charges and inversely proportional to the square of distance.