The law which states that 'a variation in an electric field causes magnetic field', is

The figure shows a capacitor made of two circular plates each of radius $12 \mathrm{cm}$ and separated by $0.5 \mathrm{mm}$. The capacitor is being charged by an external source (not shown in the figure). The charging current is constant and equal to $0.15 \mathrm{A}$, then which of the following is correct?

(Given, ${\epsilon }_0=8.85\times {10}^{-12} {\mathrm{C}}^2 {\mathrm{N}}^{-1} {\mathrm{m}}^{-2}$)

A flood light is covered with a fitter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave, $E_{\mathrm{x}}=36\sin (1.20\times {10}^{7}z–3.6\times {10}^{15}t) \mathrm{V} {\mathrm{m}}^{-1}$.

The average intensity of beam in $\mathrm{W} {\mathrm{m}}^{-2}$ will be,