Now, one place it’s more of a problem is in things like transformer windings. There are kilometers of wiring in any of them, so the higher resistance of aluminum is a problem.
Is it? As far as I know you can use a larger diameter wire to get the same resistance as copper, if your device has enough space for bigger coils.
Is it? As far as I know you can use a larger diameter wire to get the same resistance as copper, if your device has enough space for bigger coils.
You’re trying to transmit power via magnetism so distance is an issue.