Coulomb Force
Find electrostatic force magnitude between point charges in vacuum.
Your numbers
Force magnitude
Idealized SI-unit educational model. Real components, tolerances, losses and safe operating limits require separate verification.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
|F|=ke|q₁q₂|/r²
Find electrostatic force magnitude between point charges in vacuum.
Worked example
- Charge A (µC)
- 2
- Charge B (µC)
- 3
- Separation (m)
- 0.1
- Force magnitude
- 5.39253107538 N
- Interaction
- Repulsive
Scope and limitations
Idealized SI-unit educational model. Real components, tolerances, losses and safe operating limits require separate verification.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 4f16b9fb7a9c · Example checked: