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Electrical Fundamentals – Introduction to Inductance

A. Bhatia, B.E.

When a current flows in any conductor, like a simple wire, there will be circular rings of magnetic field lines around the wire that act as though they endlessly spin around and around the conductor. Inductance is a measure of the efficiency of a conductor path to create rings of magnetic field lines. A popular description of inductance is that it is related to the energy stored in the magnetic field around a conductor. While this is partially true, in that the energy in the magnetic field is due to the inductance of the conductor, the energy in the field is also about how much current is in the conductor. The induced voltage is directly proportional to the rate of change of current.

This 3-hr course material provides insight to the basic concepts of inductance and is based entirely on Naval Education and Training Materials (NAVEDTRA 14173), Electricity and Electronic Training Series; Module-2, Chapter 2 titled “Inductance”.

The course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials.

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