Question

The electric field in an electromagnetic wave is given by:
$E=\left(50N{C}^{-1}\right)\sin \omega \left(t-\frac{x}{c}\right)$
Find the intensity (in $W/m^2$ ) of the wave.

Answer 1

Answer: 3.30

$I=\frac{1}{2}{\epsilon }_0{E}_0^{2}c=3.3W/m^2$