Energy of magnetic field of coil

Energy of a coil depends on the material of the core, the mangetic field strength within the coil and volume of the core.

Links:

  1. Physics LibreTexts, derivable from 14.4.1.

energy

energy of the coil.

Symbol:

E

Latex:

\(E\)

Dimension:

energy

relative_permeability

relative_permeability of the medium.

Symbol:

mu_r

Latex:

\(\mu_\text{r}\)

Dimension:

dimensionless

magnetic_field_strength

magnetic_field_strength.

Symbol:

H

Latex:

\(H\)

Dimension:

current/length

volume

volume of the coil.

Symbol:

V

Latex:

\(V\)

Dimension:

volume

law

E = mu_0 * mu_r * H^2 * V / 2

Latex:
\[E = \frac{\mu_0 \mu_\text{r} H^{2} V}{2}\]