Question

what is the formula for energy (u) in tems of electric charge density ??​
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Answer 1

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We can then interpret this formula as saying that when an electric field is present, there is located in space an energy whose density (energy per unit volume) is u=ϵ02E⋅E=ϵ0E22

How do you calculate electric energy density?

Energy Density Formula

Energy density is denoted by letter U.

Magnetic and electric fields can also store the energy.

In the case of electric field or capacitor, the energy density is given by.

U=12ε0E2.

The energy density in the case of magnetic field or inductor is given by,

U=12μ0B2

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