The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is :

Engineering

Physics

Electromagnetic Waves

Question

9 V/m

12 V/m

6 V/m

3 V/m

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E₀ = CB₀

E₀ = 3 × 10⁸ × 20 × 10^–9

= 60 × 10^–1 = 6V/m