The electric field in a microwave traveling through air has amplitude 0.90 mV/m and frequency 20 GHz. Find the

The electric field in a microwave traveling through air has amplitude 0.90 mV/m and frequency 20 GHz. Find the amplitude and frequency of the magnetic field

The frequency will be the same as the electric field.

The impedance of air or vacuum to EM waves is 377 Ohms (376.73...), so Ohms law applied would give:

0.90 mV/m / 377 Ohms = 2.39 microAmps/m

2.39 uA/m is the H-field.

To get the B-field, multiply that number by mu-0 (4 π x 10^-7 Wb/A m)

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