\(L =\frac{\Psi}{I}\), where \(I\) is an electric current in a thin conducting loop, and \(\Psi\) is the linked flux caused by that electric current.
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"Inductance" is an electromagentic quantity that characterizes a circuit's resistance to any change of electric current; a change in the electric current through induces an opposing electromotive force (EMF). Quantitatively, inductance is proportional to the magnetic flux per unit of electric current.