Q.

The rms values of the electric field of the light coming from sun is 1000 N/C. The average energy density of the EM wave is _____×10–6 J/m3

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answer is 0008.85.

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Detailed Solution

In electromagnetic waves, electric energy density is equal to magnetic energy density. Total energy density = 2 × electric energy =214ε0E02=12×8.854×10−12×(10002)2=8.854×10−6J/m3
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The rms values of the electric field of the light coming from sun is 1000 N/C. The average energy density of the EM wave is _____×10–6 J/m3