The amplitude of the magnetic field part of a harmonic Electromagnetic Wave in vacuum is $B_0 = 510 $ nT. What is the amplitude of the electric field part of the wave?

140 NC-1 153 NC-1 163 NC-1 133 NC-1

153 NC-1

For an EM wave, $\frac{E_0}{B_0}= c \, or \, E_0 = cB_0$ $= 3 × 10^8 ×510 × 10^{-9} NC^{-1}$ $ = 153 NC^{-1}$