1 1 vote The $\vec{H}$ field (in $\mathrm{A/m}$ ) of a plane wave propagating in free space is given by \[ \vec{H}=\hat{x} \frac{5 \sqrt{3}}{\eta_{0}} \cos (\omega t-\beta z)+\hat{y} \frac{5}{\eta_{0}} \sin \left(\omega t-\beta z+\frac{\pi}{2}\right) \text {.}\] The time average power flow density in Watts is $\frac{\eta_{0}}{100}$ $\frac{100}{\eta_{0}}$ $50 \eta_{0}^{2}$ $\frac{50}{\eta_{0}}$ Plane waves and properties gate2007-ec plane-waves-and-properties electromagnetics numerical-answers + – admin 216 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.