Permittivity of free space (ϵ0)

Definition

The permittivity of free space is a physical constant that represents the ability of empty space to permit the formation of an electric field. It quantifies how easily electric fields can be established in a vacuum.

Related terms

Dielectric constant (ϵr): The dielectric constant measures how much a material can reduce or enhance the strength of an electric field compared to empty space.

Capacitance:

Capacitance is a measure of how much charge can be stored on an object per unit voltage applied across it.

Electric displacement field (D): The electric displacement field represents the total amount of electric flux per unit area that passes through a surface, including both free charges and bound charges.