Question

What's the exact value of the permittivity of air??

Answer 1

The permittivity of free space (a vacuum) is a physical constant equal to approximately 8.85 x 10 farad per
meter (F/m). It is symbolized . In general, permittivity is symbolized and is a constant of proportionality that exists between electric displacement and electric field intensity in a given medium. In many materials, particularly glass and certain plastics, is substantially greater than .
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Answer 2

8.854 x 10

absolute permittivity. For measuring relative permittivity, vacuum is to be chosen as the reference medium. It is alloted an absolute permittivity of 8.854 x 10-12 farad/metre. It's symbol is Îo .