If the radiation from the Sun reaching above atmosphere of Earth is at the rate of 1350 W/m², what is the maximum value of the electric field associated with this wave?

Question

Quizplus · Accepted Answer

The intensity of the wave is given by I = (1/2) * ε₀ * c * E², where ε₀ is the permittivity of free space and c is the speed of light. Solving for E gives E = √(2I/ε₀c). Substituting the given intensity (1350 W/m²) and known constants results in approximately 1010 V/m.

If the Radiation from the Sun Reaching Above Atmosphere of Earth