Coulomb Force Calculator
Calculate the electric force between two charges.
µC
µC
cm
Result
5,3925 N
Force: 5,3925 N (Repulsion)
Result in all units
Step-by-step solution
F = k·q₁·q₂/r²
What Is Coulomb's Law?
Coulomb's law describes the force between two electric charges. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
How is it calculated?
How Is It Calculated?
F = k × q₁ × q₂ ÷ r²
k ≈ 8,99×10⁹ N·m²/C².
- Enter the two charges and the distance between them.
Frequently Asked Questions
What happens to the force when the distance doubles?
Since it is inversely proportional to the square of the distance, the force drops to one quarter.