Epsilon Naught is synonymous to the permittivity of free space or absolute permittivity or electric constant, represented by the Greek alphabet **ε _{0}.** The Epsilon Naught value is constant at any part of the universe. It is often miss-used as the value of Epsilon not. Permittivity is the measure of the opposition offered against the formation of an electric field.

## Value Of Epsilon Naught

The permittivity of free space(**ε _{0}**) is the capability of the classical vacuum to permit the electric field. It as the definite defined value which can be approximated to

**ε _{0 }= 8.854187817 × 10^{-12} F.m^{-1} (**In SI Unit

**)**

Or

**ε _{0 }= 8.854187817 × 10^{-12} C^{2}/N.m^{2} (**In CGS units

**)**

## Epsilon Naught Units

The permittivity of free space(**ε _{0 }**) can be expressed using the SI unit as well as CGS units. Following table brief the Epsilon unit –

Epsilon Naught Units | Units |

Epsilon Naught in SI | Farad per meter or F.m^{-1} |

Epsilon Naught in CGS | Columb square per Newton meter squared or C^{2}/N.m^{2} |

### Epsilon Naught Physics

In physics, the Epsilon Naught value has good significance. Some of them are listed below.

- It represents the dielectric permittivity of the free space.
- The value of Epsilon Naught is used in calculating the dielectric constant of a material.

Hope you got to know the Epsilon naught along with Epsilon naught unit in SI unit and CGS unit, its significance and applications in various part of physics.

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