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Figure 1-13.—L/R time constant |
1-23
Inductance
Inductance is the characteristic of an electrical conductor that opposes a change in electrical current.
The symbol for inductance is L and the basic unit of measurement is the HENRY(H).
An inductor has an inductance of 1 henry if an electromotive force (emf) of 1 volt is induced in the
inductor when the current through the inductor is changing at the rate of one ampere per second.
Mathematically:
Mutual inductance:
Series inductors without magnetic coupling:
Series inductors with magnetic coupling:
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