The $rms$ value of the electric field of the light coming from the Sun is $720$ $N/C.$ The average total energy density of the electromagnetic wave is

Question

$4.58 \times {10^{ - 6}}\,J/{m^3}$

$6.37 \times {10^{ - 9}}\,J/{m^3}$

$81.35 \times {10^{ - 12}}\,J/{m^3}$

$3.3 \times {10^{ - 3}}\,J/{m^3}$

Solution

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