Inductance (電感): the ratio of magnetic flux to the current in a coil; a measure of a circuit's ability to oppose a sudden change in current and tends to retard its change.
Henry (亨利): the unit of inductance.
Self-Inductance (自感): the inductance of a single coil.
Mutual Inductance (互感): the inductance between two coils that are magnetically linked.
Transformer (變壓器): a device that uses mutual inductance to change the voltage and current of an alternating current.
Magnetic Permeability (磁導率): the ratio of magnetic induction field to the magnetic intensity; a material's ability to support the formation of a magnetic field in the material.
Magnetic Susceptibility (磁化率): the ratio of magnetization to the magnetic intensity; a measure of how easily a material magnetizes in response to a magnetic field.
Paramagnetism (順磁性): materials with positive magnetic susceptibility; non-magnetic materials that are weakly attracted to a magnet.
Diamagnetism (反磁性): materials with negative magnetic susceptibility; non-magnetic materials that are weakly repelled by a magnet.
Ferromagnetism (鐵磁性): materials with very large and positive magnetic susceptibility; materials that can be permanently magnetized, like iron, cobalt, and nickel.
Hysteresis (滯後現象): due to the retarded or dissipative effect, the resulting thermodynamic state of the system depends on its history.