Coulomb's law
Change the two charges and the distance between them to see the size and direction of the force.
Works in metric or imperial units.
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Questions students ask
How does it compare with gravity?
Both follow the inverse square law, but the electric force between two protons is about 10³⁶ times their gravitational pull.
What formula does it use?
F = kq₁q₂/r², k = 8.99 × 10⁹ N m²/C².
Free notes on Coulomb's law
- Electric Charges and Coulomb's Law · electric charge and field cbse 12th plus neet
- Electrostatics · https://www.vedantu.com/syllabus/cbse-class-12-physics-syllabus
- Fundamentals of Current Electricity · CAPE physics kirchoff's law potential difference electromagnetism
- ICSE/ISC: Physics — Electricity and Magnetism · ICSE & ISC Prep
- Fundamental Concepts of Electromagnetism · electrocinetique
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