We consider a nonlinear elliptic-parabolic system which stems from the mode
lling of heat induction processes in which a sinusoidal electromagnetic fie
ld is applied at the boundary of the inductor. The magnetic field satisfies
an elliptic equation whereas the temperature equation is parabolic. These
two equations are coupled due to the Joule effect and to the conductivity d
ependence on temperature. A Galerkin method for our problem is analyzed and
shown to yield error estimates in L-2 and H-1.