Define relative premittivity. Write its unit.

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Solution

Relative permittivity is defined as the ratio of the actual or absolute permittivity of a medium to the absolute permittivity of vacuum. If the permittivity of the medium is $ϵ$ then,
$ϵ_{r} = \frac{ϵ}{ϵ_{o}}$

As it is the ratio of permittivities, hence, it has no unit.

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Define relative premittivity. Write its unit.

Relative permittivity is defined as the ratio of the actual or absolute permittivity of a medium to the absolute permittivity of vacuum. If the permittivity of the medium is ϵ then,ϵr=ϵϵoAs it is the ratio of permittivities, hence, it has no unit.

Relative permittivity is defined as the ratio of the actual or absolute permittivity of a medium to the absolute permittivity of vacuum. If the permittivity of the medium is $ϵ$ then,
$ϵ_{r} = \frac{ϵ}{ϵ_{o}}$

As it is the ratio of permittivities, hence, it has no unit.