Question

Describe the value of characteristic impedance of free space?

Answer 1

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The characteristic impedance of free space , also called the Z o of free space, is an expression of the relationship between the electric-field and magnetic-field intensities in an electromagnetic field ( EM field ) propagating through a vacuum . The Z o of free space, like characteristic impedance in general, is expressed in ohm s, and is theoretically independent of wavelength . It is considered a physical constant.


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