A sinusoidal electromagnetic wave has an electric field whose rms value is $100\frac{V}{m}.$ What is the instantaneous rate $5$ of energy flow for this wave?

$1\mathrm{.}7{10}^{-4}\frac{W}{m^2}$

$13\frac{W}{m^2}$

$27\frac{W}{m^2}$

$1\mathrm{.}0{10}^5\frac{W}{m^2}$

$4\mathrm{.}0{10}^{10}\frac{W}{m^2}$