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  4. The wave impedance of free space is

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Q. The wave impedance of free space is

Electromagnetic Waves

Solution:

$Z=\sqrt{\frac{\mu_{r}}{\varepsilon_{r}}} \times \sqrt{\frac{\mu_{0}}{\varepsilon_{0}}}$
$=\sqrt{\frac{50}{2}} \times 376.6 \,\Omega=1883\, \Omega$