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Coulomb's law and electric field calculator

Place point charges on the plane and get the force on each one by Coulomb's law, the electric field and potential at any point, with the field-line and equipotential map and the vector sum explained step by step.

What you can do

Frequently asked questions

What does Coulomb's law say?

The force between two charges is F = k·q1·q2/r², with k = 8.99×10⁹ N·m²/C², along the line joining them.

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Versión en español

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