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Electric constant

The vacuum permittivity ε0 relates the units for electric charge to mechanical quantities such as length and force

ε0 = 8. 854 187 817 ... · 10−12 F/m

 


Explanation

It is a physical constant, that can be calculated with any precision of exactly defined physical constants

where

    µ0 Magnetic constant
    c Speed of light

 


Example 1

The electric field constant occurs in the Maxwell equation of electric field strength

where

    E Electric field strength
    ε0 Electric field constant
    D Electric displacement
    P Polarization

 


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