Electromagnetic Waves

A plane electromagnetic wave propagating in \(\mathrm{x}\)-direction is described by

\(E_y=\left(200 \mathrm{Vm}^{-1}\right) \sin \left[1.5 \times 10^7 t-0.05 x\right] \text {; }\)

The intensity of the wave is :

(Use \(\epsilon_0=8.85 \times 10^{-12} \mathrm{C}^2 \mathrm{~N}^{-1} \mathrm{~m}^{-2}\))