Coulomb Force Calculator
Free calculate electrostatic force between two charged particles using coulomb's law from charges and distance.
Input Parameters
1 for vacuum, ~80 for water
Results
Enter charges and distance to calculate force
Coulomb's Law
Force Formula
F = k × (q₁ × q₂) / r²
Where k = 1/(4πε₀) = 8.99 × 10⁹ N·m²/C²
Key Points
- • Like charges repel, opposite attract
- • Force is inversely proportional to r²
- • Force is proportional to product of charges