In a travelling plane electromagnetic wave the maximum magnetic field is 1.26×10−4T. The intensity of the wave is (Assume μ0=1.26×10−6H/m)

Intensity of electromagnetic wave in terms of magnetic field is I=12B02μ0C (where B0 is peak value of magnetic field) I=12×1.26×10−4×1.26×10−41.26×10−6×3×108 I=1.89×106W/m2