https://www.youtube.com/watch?v=LS5ZwlIJkD4Circuits

This is a light introduction to Magnetism and Electricity. Just enough to give you a fundamental understanding of a circuit and enough to set the stage for understanding relays as well. There is an error in this lecture, Silver is a better conductor than Gold as well as copper.

Part 1

Part 2

https://www.youtube.com/watch?v=LS5ZwlIJkD4

Short Version of Ed Leedskalnin’s Monopolar Theory of Magnetism, Gravity and Electricity.