First slide

Nature of electromagnetic wave

Question

A wave is propagating in a medium of dielectric constant 2 and relative permeability 50. The wave impedance is

Moderate

Solution

Wave impedance $Z = \sqrt{\frac{μ_{r}}{\in_{r}}} \sqrt{\frac{μ_{0}}{\in_{0}}}$
$Z = \sqrt{\frac{50}{2}} x 376.6 = 5 x 376.6; Z = 1883 Ω$

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