Can electricity be generated from the Earths magnetic field?
Good afternoon SKYCAT, hope today finds you well.?? Yes, it can be done We can get electricity from the magnetic field, but we need invest energy equal to what we get out, or a little more to take care or electric resistance and friction. Specifically, you can whirl around a “search coil” in the Earth’s magnetic field, and extract an induced current due to its motion in a magnetic field. It’s a bit like the way an electric generator creates a current from a coil rotating between its pole pieces. Some spinning satellites and space probes have used search coils to observe the ambient magnetic field, or at least its two components perpendicular to the spin axis. But there ain’t no such thing as free power from the Earth’s magnetic field.
