In: Physics
The intensity of the electromagnetic wave is,
I = Eo2/2cuo
Here, c is the speed of light, uo is the permiability of free space, and Eo is the maximum electric field.
Thus, the mnaximum electric field strength is,
Eo = [2cuoI]1/2
= [(2)(3x108 m/s)(4(pi)x10-7 T.m/A)(1350 W/m2)]1/2
= 1008.9 N/C
= 1.0089x103 N/C
= 1.00x103 N/C
Note: Unit of electric field is N/C or V/m.