Magnetic fields and magnetic force

What this note covers

1. Map magnetic fields and relate them to current
2. Solenoids and superposition organise field geometry
3. Force on a moving charge is perpendicular to motion
4. Circular and helical paths reveal charge-to-mass behaviour
5. Force on a current-carrying wire links particles to apparatus
6. Crossed fields and measurements test model assumptions

6 sections · 10 key terms & formulas · 6 common mistakes