Question

Define the energy density and energy current of a plane progressive wave. Obtain the expressions for the energy density and intensity of a plane progressive wave

Answer 1

Energy density is the amount of energy stored in a given system or region of space per unit volume. While Energy current is a flow of energy defined by the Poynting vector (E × H).

Equation of plane progressive wave is given by y=0.6sin2π(t−x2).