The current of an electromagnetic wave traveling on a transmission line is given by i(z,t) = 5e-az cos(0.31 x 1010t + 10tz) (A), where z is the distance in meters (m) from the generator. Determine: a) (1 pts) the direction of wave travel إجابتك b) (1 pts) the reference phase (in degrees) إجابتك c) (2 pts) the frequency (in GHz) إجابتك
d) (2 pts) the phase velocity (in m/s) إجابتك e) (2 pts) the wavelength (in m) إجابتك f) (3 pts) the attenuation factor (in Np/m) such that the amplitude of the wave was measured to be 250 mA at z = 1 m إجابتك !