If you run an electric current through a coil of wire, the electricity creates a magnetic field. Put a piece of metal, or Wolverine, inside this coil and you can suspend it in the field. But if you rapidly change the direction of the electricity flowing through the coil—as AC ("alternating current") would do—Wolverine's metal skeleton would begin to heat up. The changing current in the coil creates a changing magnetic field, in the coil and in Wolverine, both leading to a changing electrical current in Wolverine's metal skeleton. If you leave some metal in this setup long enough, the electrons bump and bash against each other to the point of melting. Shut down the coil, and all you are left with is a puddle of metal, or, in perhaps this most scientifically accurate of villainous plans, a puddle of Wolverine.