(5.24)

The equation (5.24) is valid for static as well as for time varying case.

Equation (5.24) indicates that a time varying electric field will give rise to a magnetic field even in the absence of . The term has a dimension of current densities and is called the displacement current density.

Introduction of in equation is one of the major contributions of Jame's Clerk Maxwell. The modified set of equations

                             (5.25a)