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What is meant by electrostatic energy ...

What is meant by electrostatic energy density ?

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The energy stored per unit volume of space is defined as energy density `u_E = U/("volume")` From equation, `u_E = 1/2((epsilon_0A))/d(Ed)^2 = 1/2epsilon_0(Ad) E^2 or u_E = 1/2 epsilon_0E^2`
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