Question

Define dielectric constant of a medium. What is its S.I. unit?

Answer 1

Hint: Dielectric constant is the property of an electrical protecting material (a dielectric) equivalent to the proportion of the capacitance of a capacitor loaded up with the offered material to the capacitance of an indistinguishable capacitor in any vacuum without the dielectric material.

Complete answer:
An electric field is proliferating through a medium it captivates that medium, this makes a division in control, that has its own field which cooperates with the episode field. It backs it off, and it diminishes the coulomb force between two charges in that material.

The factor by which the power diminishes is the dielectric constant. The factor by which the speed of light inside a dielectric ease back down is the square foundation of the dielectric constant.
\[K=\dfrac{\varepsilon }{{{\varepsilon }_{0}}}\]
The standard SI unit for permittivity is farad per meter \[\dfrac{F}{m}\].

It is usually known as the relative permittivity, that is the proportion between the permittivity of a specific medium comparative with that of the vacuum permittivity.

It is a lot simpler to stroll on a trampoline. Furthermore, the more stretchable the trampoline is, the harder it is to stroll on it. This is like the polarizability (extending of inverse charges). Higher polarizability brings about higher permittivity (and dielectric constant) and the lower the speed of light.

Note: A dielectric constant is a number without measurements. The term encasing is commonly used to show electrical obstacles while the term dielectric is utilized to demonstrate the energy putting away the limit of the material (by methods for polarization). A typical case of a dielectric is the electrically protecting material between the metallic plates of a capacitor.