Then you would know you can get more magnetic energy from a large coil using less electrical power than a small one as an analogist example. The average motor uses a very small high current coil system thus more power is consumed. The main key is magnet power we are going for not electric power. So for example coils of equal magnetism one uses say 10 watts and the other uses .5 watts and this is an easy experiment to do.Brian P wrote: ↑Sat Oct 21, 2017 10:16 amI know quite well how an electric motor works. The energy input is in the form of electricity ... volts x amps. It doesn't just magically spin and make power by itself. Not connected to a supply of the right kind of electricity, it sits there and does nothing.
That electricity, by the way, is generating magnetism in an electromagnet - not a permanent magnet. Some electric motors do indeed have permanent magnets inside them ... but unless combined with an electromagnet that reverses its polarity in a prescribed pattern (and which requires electricity to do so!), it sits there and does nothing.
If you think otherwise, it's you who doesn't know how an electric motor works ...
An electric motor is also not considered to be a "prime mover".
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If all you know about thermo is that it has "thermo" in the name and therefore must only concern heat, you are not qualified to tell anyone what it may or may not cover let alone "leave it at the door"