Coulomb's Law Calculator
Calculate the electrostatic force between two point charges
k = 8.99e9 N·m²/C² (Coulomb's constant)
Use scientific notation for very small charges (e.g., 1.6e-19)
Formula Used
F = k|q₁q₂|/r²
k = 8.99 × 10⁹ N·m²/C² (Coulomb's constant)
Like charges repel, opposite charges attract