Physics › Section M · Electric charge and field › Topic M.3
Coulomb's law
Charges push and pull on each other, and Coulomb's law says exactly how hard. It looks almost the same as Newton's law of gravitation, but the electric force is vastly stronger and, unlike gravity, it can repel as well as attract.
In this topic
- Measuring the electric force
- Coulomb's law
- The Coulomb constant
- Worked example: two charged beads
- Electric force and gravity
- More than two charges
- Worked example: charges on a line
- Worked example: a right-angled triangle
- Common mistakes to avoid
- Key takeaways
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