Question

Does dielectric constant change with temperature?

Answer 1

Explanation:

We know that the dielectric constant or relative permittivity is given as the ratio of the permittivity of the substance to the permittivity of a vacuum.

Mathematically express as:

$k=\frac{\epsilon }{{\epsilon }_0}$

Where,

$k$ is the dielectric constant.

$\epsilon$ is the permittivity of the substance.

${\epsilon }_0$ is the permittivity of the free space.

Also, the temperature has an inverse relationship with the dielectric constant such as.

$k\propto \frac{1}{T}$

Therefore the dielectric constant lowers as the temperature rises.

Hence, the dielectric constant change with a change in temperature.