The magnetic field of a plane wave propagating in free space is given by the following expression: H (r,t) = 0 .2 cos(6.28 × 109 [t – x/c] + π/4 ) az (amps/m)
a. Write a similar expression for the electric field.
b. What are the frequency and the wavelength?
c. What are the direction of propagation and the direction of linear polarization?