This preview shows page 1. Sign up to view the full content.
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 B-field? HINT: Remember Lenzs law. Calculate the time-averaged 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...
View Full Document
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