WATTS

Watts have the same trouble as Amperes. "Watts" are the name of an electrical flow... but what stuff does the flowing? Energy! A "watt" is just a fancy way of saying "quantity of electrical energy flowing per second." But what is a quantity of electrical energy? I'll get to that in a sec. But briefly, any sort of energy is measured in terms of Joules. A joule of electrical energy can move from place to place along the wires. When you transport one joule of energy through a channel every second, the flow-rate of energy is 1 Joule/Sec, and "one Joule per second" means "one watt."

What is power? The word "power" means "energy flow." In order to understand this stuff, it might help if you avoid using the word "power" at the start. The word "power" means "energy flow", so instead practice thinking in terms of energy-flow instead of in terms of the word "power." Also think in terms of joules-per-second rather than watts, and eventually you'll gain a good understanding of the ideas behind them. Then, once you know what you're talking about, you can start speaking in shorthand. To use the shorthand, don't say "energy flow", say "power." And say "watts" instead of "joules per second." But if you start out by saying "power" and "watts", you might never really learn what these things are, because you never really learned about the energy flow and the joules.