"Transformers and generators of any description are making the currents in the same way by filling the coil's iron core with magnets and letting the iron core push them out and into the coil.""Connect the battery with the electric magnet. it will be a field magnet now. Put the three-inch coil between the iron prongs and take it out, do it fast. repeat it, then you will have a steady light in the light bulb. Now you and the field magnet are a generator." EDL.