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# Permittivity of Free Space

Electric constant is equal to 8.85418782 × 10-12 m-3 kg-1 s4 A2. It is a physical constant with the value of the absolute dielectric permittivity of classical vacuum. It is the measurement of capability of vacuum in permitting the electric field lines. Its also called as vacuum permittivity or permittivity of free space.

## Electric Constant

Constant Name

Electric Constant (Permittivity of Free Space)

Symbol : ε0 = 1 / (μ0c2)

Unit : F·m-1

Value : 8.854 187 817... × 10-12

Electric constant is equal to 8.85418782 × 10-12 m-3 kg-1 s4 A2. It is a physical constant with the value of the absolute dielectric permittivity of classical vacuum. It is the measurement of capability of vacuum in permitting the electric field lines. Its also called as vacuum permittivity or permittivity of free space.

The value of electric constant ε0 is given as 1 / (μ0c2), where c is the speed of light in classical vacuum,μ0 is the magnetic constant.

The value of electric constant ε0 is given as 1 / (μ0c2), where c is the speed of light in classical vacuum,μ0 is the magnetic constant.