[\oint \vec B \cdot d \vec l = \mu_0 I]

[\Phi_B = \int \vec B \cdot d \vec A]

[\varepsilon_{emf} = - \frac{ d \Phi_B}{ d t}]

[V = L \frac{ d I}{ d t}]

[L = \frac{ \Phi_B}{ I}]

[U = \frac{ 1}{ 2} L I^2]