The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is: (c = speed of electromagnetic waves)

A capacitor of capacitance 'C', is connected across an ac source of voltage V, given by V=V_0sinωt The displacement current between the plates of the capacitor, would then be given by

A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light)

An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity ε = 4 Then

The velocity of electromagnetic radiation in a medium of permittivity & and permeability μ_0 given by