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  4. If a linear isotropic dielectric is placed in an electric field of strength E, then the polarization P is

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Q. If a linear isotropic dielectric is placed in an electric field of strength E, then the polarization P is

KEAMKEAM 2012Electrostatic Potential and Capacitance

Solution:

For linear isotropic dielectric,
Polarization $P = x_e E$
where $x_e$ is a constant characteristic of the dielectric and is known as the electric susceptibility of the dielectric medium.