What do you mean by permittivity?
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Explanation:
Permittivity is a material property that affects the coulomb force between two point charges in the material.
F=k(q1 q2)/r2
where k is constant, whose value is (1/4πε₀ ) where ε₀ is called as permittivity of free space.
The value of ε₀ in free space is 8.854 x 10⁻¹² C²N⁻¹ m⁻²
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When two charges are placed in any medium other than air, the forces between them is greatly affected.
Permittivity of the medium which determines the electric force between two charges situated in that medium.
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