Coulomb's Law Calculator

Calculate the electrostatic force between two charged particles. Coulomb's Law describes the force of attraction or repulsion between two point charges, fundamental to understanding electrostatics and electric fields.

Key Concepts

• The force is directly proportional to the product of the charges (F ∝ q₁q₂)
• The force is inversely proportional to the square of the distance (F ∝ 1/r²)
• Like charges (same sign) repel each other with a positive force
• Opposite charges (different signs) attract each other

Common Applications

• Physics education and electrostatics homework
• Understanding atomic structure and electron-proton interactions
• Calculating forces in electrostatic experiments
• Engineering applications in electronics and particle physics

Tips

• Use scientific notation for very small charges (e.g., 1e-6 for microcoulombs)
• Negative charges indicate electrons or negatively charged objects
• The visualization shows charge polarity and force direction