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

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