Question

The mean intensity of radiation on the surface of the sun is about 10⁸ W/m². What is the closest value to the rms value of the corresponding magnetic field?
a) 316 × 10⁻⁴ T
b) 200 × 10⁻⁴ T
c) 141 × 10⁻⁴ T
d) 100 × 10⁻⁴ T