An electromotive force (e.m.f.) is induced in an electric circuit when magnetic flux linking with the circuit changes. This is often called electromagnetic induction which is very familiar to motor and transformer designers. It is very important in the characterisation and analysis of the performance and properties of soft magnetic materials under a.c. or any other form of changing magnetisation. Faraday's law was briefly introduced in Section 2.1.4. In this section its origins and measurement relevant to electrical steels are set out in more detail.
Electromagnetic induction, Page 1 of 2
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