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Beginning of Paper
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Lenz's Law and Faraday's Law of Induction
1. With this definition of the flux being , we can now return to Faraday's
investigations. He found that the magnitude of the emf produced depends on the
rate at which the magnetic flux changes. Faraday found that if the flux through
N loops of wire chan ....
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Middle of Paper
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.... flux would produce an even larger current,
followed by a still larger change in flux, and so on. The current would continue
to grow indefinitely, producing power (=) even after the original stimulus ended.
This would violate the conservation of energy. Such "perpetual - motion" devices
do not exist.
It is important to note, which I believe was forgotten in the class
lecture, is that Faraday's investigation, as summarized in Faraday's law, says
that an emf is induced whenever there is a change in flux. Thus an emf can be
induced in two ways: (1) by changing the magnetic field B; or ....
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SUBJECTS
