For a source-free polarized medium whereρ= 0, J = 0, µ= µo, but where there is a volume de...

For a source-free polarized medium whereρ= 0, J = 0, µ= µo, but where there is a volume density of polarization P, a single vector potential n. may be defined such that

H = jω∈0▿X πe.) Express electric field intensity E in terms of πe and P.

b) Show that n. satisfies the nonhomogeneous Helmholtz's equation

The quantity n. is known as the electric Hertz potential.