Coulomb's Law
Interactive simulation — adjust parameters and watch the visualization update in real time.
How it works
The magnitude of the electrostatic force between two point charges in vacuum is F = k|q₁q₂|/r² with k ≈ 8.99×10⁹ N·m²/C². Like charges repel, unlike attract.
Key equations
F = k |q₁ q₂| / r²