Calculate electric field and magnetic field produced by radiation emitted by a 100 W bulb at a distance of 1 m if radiation efficiency is only 5%.
The Attempt at a Solution
I only know how to find intensity due to the bulb:
I = P/4πr2 = 5/4π W/m2
I have absolutely no idea how to find the electric and magnetic field from that information.
I do know that B = E/c, so I just need to find one of those.