Force Between Two 1 C Charges 1 m Apart
Two 1 C charges separated by 1 m repel with a force of about 8.99 × 10⁹ N, revealing how enormous 1 coulomb truly is.
How to use this tool
- Enter charge q₁, charge q₂ and separation r in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your electrostatic force and the full breakdown beneath it.
One coulomb is an enormous charge — two such charges a metre apart would repel with nearly 9 billion newtons of force.
Frequently asked questions
- What is Coulomb's constant k?
- k = 1/(4πε₀) ≈ 8.9875×10⁹ N·m²/C², where ε₀ is the permittivity of free space. It appears in all electrostatic force calculations.
- What is a typical charge magnitude?
- 1 μC (1×10⁻⁶ C) is typical in electrostatics experiments. An electron carries 1.602×10⁻¹⁹ C.