Write down the formula for the energy density of the magnetic field.

The energy of a uniform magnetic field is determined by the value of its induction, the magnetic properties of the medium and the volume of space occupied by the field:

W = B2V / 2µ0µ

where B is the modulus of the magnetic field induction; V is the volume of space occupied by the field; µ0 is the magnetic constant, µ0 = 4π ⋅ 10–7 H / m; µ is the magnetic constant.

In the International System of Units, the energy of a magnetic field is measured in joules (1 J).

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