traveling in a nonmagnetic medium is given as
H(x, t) = 20.2 cos(6π × 108 t – 10.2 x)
Find
(A/m)
(a) the direction of wave propagation;
(b) the relative permittivity e, and the intrinsic impedance n;
(c) the time-domain expression of the associated electric field E;
(d) the time-average power density Sav; and
(e) the net time average power of the EM wave crossing a rectangular
area of 30 × 20 cm oriented along yz plane, that is, the flat area has
a normal vector î.
Fig: 1