First slide

Nature of electromagnetic wave

Question

In an electromagnetic wave in free space the root mean square value of the electric field is E_rms = 6 V/m. The peak value of the magnetic field is

Moderate

Solution

$C = \frac{E_{0}}{B_{0}} = \frac{\sqrt{2} x E_{rns}}{B_{0}} B_{0} = \frac{\sqrt{2} x 6}{3 x 10^{8}} = 2 \sqrt{2} x 10^{- 8} = 2.83 x 10^{- 8} T$

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