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Unformatted text preview: 240 Chapt. 31 Faradays Law of Induction and Inductors where r is a fiducial (or reference) radius and t is a fiducial (or reference) time. At t = 0, the loop has radius zero. At t = t , the loop has radius r . a) What is the magnetic flux due to the applied field linked by the loop in terms of the given variables B , r , t , and t ? b) What is magnitude of the induced emf E in the loop in terms of the given variables B , r , t , and t ? What is the SENSE of the emf (i.e., what is the direction of current flow that it would cause) when viewing the loop in the direction of the applied Bfield? HINT: Remember Lenzs law. Calculate the timeaveraged induced emf first if you need to. c) Given that the loop has constant resistance R , what is the power dissipated in the loop by the induced current in in terms of the given variables B , r , t , t , and R ? d) What is the total energy dissipated E dis (i.e., lost to heat by the resistance) in the loop in the interval from t = 0 to t in terms of the given variables...
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This note was uploaded on 11/16/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.
 Fall '06
 Buchler
 Physics

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