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A porous solid dielectric has a relative permittivity of 4. It is to be impregnated by a liquid dielectric whose relative permittivity should ideally be

A porous solid dielectric has a relative permittivity of 4. It is to be impregnated by a liquid dielectric whose relative permittivity should ideally be Correct Answer 4

Relative permittivity:

  • Relative permittivity εr (also dielectric constant) is a measure of polarization of a material in electric field (the higher the permittivity the greater is polarization of the material).
  • Polarization occurs when electric field displaces charge carriers in atoms (electron polarization), molecules (atom polarization), molecule groups (molecular polarization) or crystals (lattice polarization).
  • The liquid-impregnated material has higher value of relative permittivity than the cellulose material alone but ideally it should be same as the cellulose material.

 

A porous solid dielectric has a relative permittivity of 4.

It is to be impregnated by a liquid dielectric whose relative permittivity should ideally be 4.

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