Physics

Coulomb's Law Calculator

Find the electric force between two charges.

Charge 1 (µC)

Charge 2 (µC)

Distance

Calculated Output

Electric force (N) 22.469

Formula: F = k·q₁·q₂ ÷ r², k = 8.99×10⁹

Step-by-Step Breakdown

1. Values used:

2. Charge 1 = 5 µC

3. Charge 2 = 5 µC

4. Distance = 0.1

6. Electric force = 22.469N

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The math behind it

F = k × q₁ × q₂ ÷ r², with k = 8.99 × 10⁹ N·m²/C². Like charges repel; opposite attract.

5 µC & 5 µC at 0.1 m → 22.5 N.

Negative force?

Indicates attraction (opposite-sign charges).