Answer :

We know that,

The energy stored per unit volumeenergy density) in an electric field E is given by



Where,


E=magnitude of electric field intensity


ϵ0=absolute permittivity of vacuum


As we know that,


And the electric field due to a point charge Q at a distance r is given by



Therefore, energy density by formula)


And E




Thus , the energy density in the electric field created by a point charge falls of with distance from a point charge as

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