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(C) The polarisation $P$ of a dielectric material is defined as the induced dipole moment per unit volume.For a linear isotropic dielectric,the induce

Vedclass · Accepted Answer

$P = \chi_{e} E$

Vedclass · Answer

(C) The polarisation $P$ of a dielectric material is defined as the induced dipole moment per unit volume.For a linear isotropic dielectric,the induced polarisation $P$ is directly proportional to the applied external electric field $E$.Mathematically,this is expressed as $P = \epsilon_{0} \chi_{e} E$,where $\epsilon_{0}$ is the permittivity of free space and $\chi_{e}$ is the electric susceptibility.In many simplified contexts or systems of units where $\epsilon_{0}$ is absorbed or considered,the relation is given as $P = \chi_{e} E$.Therefore,the correct relation is $P = \chi_{e} E$.

Choose the correct relation between polarisation $P$ and electric susceptibility $\chi_{e}$ of a dielectric material. ($E =$ electric field)

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Assertion : In the absence of an external electric field,the dipole moment per unit volume of a polar dielectric is zero.
Reason : The dipoles of a polar dielectric are randomly oriented.

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