The image of polarization of dielectric medium is shown below.
To compute for polarization of dielectric medium, three essential parameters are needed and these parameters are Permittivity of Vacuum (εo), Dielectric Constant (εr) and Electric Field Intensity (E).
The formula for calculating polarization of dielectric medium:
P = εo(εr – 1)E
Where:
P = Polarization of a Dielectric Medium
εo = Permittivity of Vacuum
εr = Dielectric Constant
E = Electric Field Intensity
Let’s solve an example;
Find the polarization of dielectric medium when the permittivity of vacuum is 12, the dielectric constant is 6 and the electric field intensity is 4.
This implies that;
εo = Permittivity of Vacuum = 12
εr = Dielectric Constant = 6
E = Electric Field Intensity = 4
P = εo(εr – 1)E
P = (12)(6 – 1)(4)
P = (12)(5)(4)
P = 240
Therefore, the polarization of dielectric medium is 240 C/m².