The first part of this article is a discussion of some ambiguities and sources of confusion in the presentation of electromagnetic induction in introductory texts. Particular attention is paid to the use of special relativity theory in these presentations. The second part of the paper discusses various examples of electromagnetic induction that have acquired reputations as “exceptions to the flux rule”. The origin of these exceptions is traced to an inappropriate choice of contour or its motions. We explicitly show that in these examples no exceptions occur, and give a general prescription for evaluating induced emf's.
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© 1969 American Association of Physics Teachers.
1969
American Association of Physics Teachers
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