Inductance: Inductance, also known as self inductance coefficient, is a physical quantity that represents the self inductance ability of an inductor component. When the magnetic flux passing through a coil changes, an electric potential is generated in the coil, which is an electromagnetic induction phenomenon. The generated electromotive force is called induced electromotive force, and the magnitude of the electromotive force is proportional to the speed of magnetic flux change and the number of coil turns. The basic unit of inductance is H (Heng), as well as milliHeng (mH) and microHeng（ μ H) . 1H=10 ^ 3mH=10 ^ 6 μ H
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