Shaped like a toroid. Pretty good way to generate electricity if you can get the winding down properly.
I am going to have to find my drive and see if I can find the files on it. The toroid shape when wound with a condcuting wire and then introduction of a magnetic field yields turning force to provide torque.
Corect.
Came across that regarding toroids generators and a lot of info on Tesla a while back when the 9 to 5 had a variable schedule thay afforded a lot of reading…