Many years ago NASA had two satellites tethered with wire trying to generate electricity. They were looking at the wire whizzing around the Earth’s magnetic field generating electricity. All I know is that the satellites were disconnected promptly at the start of the experiment and nothing was ever heard of this experiment again.
My thoughts on this were always that you need a second wire to complete the circuit and this wire would be getting the same EMF in the same phase and would therefor cancel out each other out.
Anyone know the lowdown on this mission?