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Engineering Physics by S. Mani Naidu

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6.6 Frequency dependence of polarizability: (Dielectrics in alternating fields)

In this topic, the variation of polarizability, polarization and dielectric constant of the dielectric with the frequency of the applied electric field has been explained. The permittivity of a dielectric material is equal to ε0εr, where εr is called the relative permittivity or dielectric constant of the material and ε0 is the permittivity of the free space. Also from Clausius–Mosotti relation, we know that the dielectric constant is related to polarizability of the material. So, we can see the variation of permittivity and hence relative permittivity or dielectric constant, in turn polarizability of a dielectric material with the frequency of the applied electric ...

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