CourseNotes.41 - 11 Chapter 30: Induction and Inductance In...

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Unformatted text preview: 11 Chapter 30: Induction and Inductance In the last section we considered how magnetic fields are produced by currents. In this chapter we will see that changing magnetic fields produce currents in conducting materials. One can see how this will make for a very complicated situation. I.E. currents produce magnetic fields which produce currents which produce magnetic fields ad infinitum. We will not have to worry about such complexity in general though because we will only be considering first order effects. Since changing magnetic fields produce currents and currents are induced by potential differ- ences, we are lead to the conclusion that changing magnetic fields produce electric fields. This is our first encounter with what we will see is a very interesting and far reaching fact: electricity and magnetism are linked together in a very complicated way. 11.1 Faraday’s Law and Lenz’s Law Faraday’s law is (at least in appearance) similar to Gauss’s law. Like Gauss’s law, Faraday’s lawFaraday’s law is (at least in appearance) similar to Gauss’s law....
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This note was uploaded on 12/05/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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