Electromagnetism
What Is Coulomb’s Law?
Coulomb's law gives the force between two electric charges: F = kq₁q₂/r². Learn the formula and the value of k, work through seven examples, and test it all in an interactive lab.
13 min read
Topic Cluster
Electromagnetism
Electric charge, fields, current and magnetism. From Coulomb’s and Ohm’s laws to electromagnetic induction and circuits — how charges and fields work.