Relation between dielectric constant and suspectibility, Dielectric strength
The capacitance of the parallel plate capacitor determines the amount of charge that it can hold.
The distance between the two plates is
and the area of the medium between the plates is
According to Gauss’s law, the capacitance of the capacitor is.
Let’s first study the relationship between dielectric constant and electric susceptibility.
The dielectric property plays a major role in the functioning of the capacitor.
Suppose there is a parallel plate capacitor with dielectric medium which has electric field
due to the polarization.
is the electric field present between the parallel plate capacitor.
Hence the net electric field
of the parallel plate capacitor with dielectric medium is.
The value of the
is the surface charge density on the surface due to the polarization is given as,
But, the polarization
is equal to the
then electric field is.
Now the electrical susceptibility
indicates the degree of polarization
of the dielectric medium to an applied electric field
Here put the value of
in the equation of electric field then we get,
The dielectric constant
define as the ratio of the electric field without a dielectric
to the net electric field
Now we get the relationship between dielectric constant
Now, let’s study the dielectric strength
The dielectric strength defines as the electrical strength of the insulating material.
It means the maximum electrical field such that the dielectric medium retains its insulating property, such electric field is known as the dielectric strength.
Dielectric medium is also defined as the maximum voltage required to produce a dielectric breakdown through the material and it is expressed as,
This is the relation between the dielectric constant and the electric susceptibility is.
Dielectric medium is also define as the maximum voltage required to produce a dielectric breakdown through the material and it is expressed as,