The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B₀ = 510 nT. What is the amplitude (in N/C) of the electric field part of the wave?
Physics · Electromagnetic wave
JEE Mains

Question

The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B₀ = 510 nT. What is the amplitude (in N/C) of the electric field part of the wave?

G1 Physics · Accepted Answer

In vacuum E₀=cB₀. With B₀=510 nT=510×10⁻⁹ T, E₀=3×10⁸×510×10⁻⁹=153 N C⁻¹. Answer: 153.