First slide

Nature of electromagnetic wave

Question

The wave impedance of free space is

Moderate

A

0
B

$376.6 Ω$
C

$1883 Ω$
D

$3776 Ω$

Solution

$Z = \sqrt{\frac{μ_{r}}{ε_{r}}} \times \sqrt{\frac{μ_{0}}{ε_{0}}}$
$= \sqrt{\frac{1}{1}} \times 376 .6 = 376 .6 Ω$

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