It turns out that a changing magnetic field also makes an electric field. If you move a magnet near a metal conductor, the motion will create a changing magnetic field that produces an electric field. And Vice VersaIt goes the other way too: Just as a changing magnetic field creates an electric current, an electric current creates a magnetic field. A changing magnetic field creates eddy currents in a metal, and these eddy currents then make their own magnetic fields. Because these eddy currents create magnetic fields, there will be an interaction between a metal and the thing making a changing magnetic field.