In electromagnetism and electronics, inductance is the attribute of an electrical conductor by which the charge and current flowing through it induces an electromotive force in both the conductor itself and any nearby conductors by mutual inductance.
Inductance is also characterized by an effect caused by the magnetic field of a current carrying conductor acting back on the conductor. An electric current running through any conductor will create a magnetic field surrounding the conductor. When the current changes it creates a changing magnetic field. In the most general case, the inductance can be calculated from Maxwell's equation.