1985 | OriginalPaper | Buchkapitel
Electrical Generators and Power Distribution
verfasst von : Noel M. Morris
Erschienen in: Mastering Electrical Engineering
Verlag: Macmillan Education UK
Enthalten in: Professional Book Archive
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The early activities of scientific pioneers led to the idea that magnetism and electricity were interrelated with one another. It was found that when a permanent magnet was moved towards a coil of wire — see Figure 8.1 — an e.m.f. was induced in the coil. That is, the e.m.f. is induced by the relative movement between the magnetic field and the coil of wire. Lenz’s law allows us to predict the polarity of the induced e.m.f.