Electromagnetism
Charge, fields, circuits and Maxwell's equations.
E&M
How Electromagnetic Induction Works: Faraday's Law
Faraday's law and Lenz's law explained with magnetic flux, a worked EMF calculation, and a table of generators, transformers and induction devices.
E&MHow Ohm's Law Works: Voltage, Current and Resistance
Ohm's law explained with voltage, current and resistance, series and parallel rules, a worked circuit and a table of material resistivities.