The electric field in an electromagnetic wave is given by E = 56.5 sin $\omega$(t $-$ x/c) NC$-$1. Find the intensity of the wave if it is propagating along x-axis in the free space. (Given : $\varepsilon $0 = 8.85 $\times$ 10$-$12C2N$-$1m$-$2)

Question

The electric field in an electromagnetic wave is given by E = 56.5 sin $\omega$(t $-$ x/c) NC^$-$1. Find the intensity of the wave if it is propagating along x-axis in the free space.

(Given : $\varepsilon $₀ = 8.85 $\times$ 10^$-$12C²N^$-$1m^$-$2)

5.65 Wm^$-$2

4.24 Wm^$-$2

1.9 $\times$ 10^$-$7 Wm^$-$2

56.5 Wm^$-$2

Solution

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