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In an electromagnetic wave, the electric field of amplitude 6.2 V/m oscillates with a frequency of 2.4 X 1010 Hz. The Energy density of the wave is __________

In an electromagnetic wave, the electric field of amplitude 6.2 V/m oscillates with a frequency of 2.4 X 1010 Hz. The Energy density of the wave is __________ Correct Answer 3.4 X 10-10J/m3

From Maxwell’s equation, we know, Energy density = εE2 Here, Emax = 6.2 V/m and ε = 8.85 X 10-12 C2/Nm2 Therefore, Energy Density = 8.85 X 10-12 X 6.2 X 6.2 = 3.4 X 10-10J/m3.

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