9 GHz
T
=ν
=
×
π =
(b) E0 = B0c = 2×10–7 T × 3 × 108 m/s = 6 × 101 V/m
The electric field component is perpendicular to the direction of
propagation and the direction of magnetic field Therefore, the
electric field component along the z-axis is obtained as
Ez = 60 sin (0 5 × 103x + 1 5 × 1011 t) V/m
8