The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is Bo = 510 nT. What is the amplitude of the electric field part of the wave?

Amplitude of magnetic field of an electromagnetic wave in a vacuum,
Bo = 510 nT = 510 x 10⁻⁹T
Speed of light in a vacuum, c = 3 x 10⁸ m/s
Amplitude of electric field of the electromagnetic wave is given by the relation,
E = cBo
= 3 x 10⁸x 510 x 10⁻⁹= 153 N/C
Therefore, the electric field part of the wave is 153 N/C.