A plane electromagnetic wave propagating in \( x \)-direction is described by \( E_{y} = (200 \, \mathrm{V \, m^{-1}})\sin[1.5 \times 10^{7} t - 0.05 \, x] \);
The intensity of the wave is : (Use \( \varepsilon_{0} = 8.85 \times 10^{-12} \, \mathrm{C^{2} \, N^{-1} \, m^{-2}} \) )
