Introduction to magnetismMagnetic force on a chargeWhat is magnetic force?Cross product 1Cross product 2Magnetic force on a proton example (part 1)Magnetic force on a proton example (part 2)Magnetic force on a current carrying wire
Magnetic field created by a current carrying wireWhat are magnetic fields?Magnetic force between two currents going in the same directionMagnetic force between two currents going in opposite directionsInduced current in a wire
Flux and magnetic fluxWhat is magnetic flux?Faraday's Law IntroductionLenz's LawFaraday's Law exampleWhat is Faraday's law?Emf induced in rod traveling through magnetic fieldFaraday's Law for generating electricity
About this unit
Magnetic fields are extremely useful. The magnetic field of the Earth shields us from harmful radiation from the Sun, magnetic fields allow us to diagnose medical problems using an MRI, and magnetic fields are a key component in generating electrical power in most power plants. In this topic you'll learn about the forces, fields, and laws that makes these and so many other applications possible.