Emf question

  • #1
A piece of copper wire is formed into a single circular loop of radius 9 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.45 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m. What is the average electrical energy dissipated in the resistance of the wire.


I know the emf = 0.254 Volts.

How do I find the energy dissipated?
 

Answers and Replies

  • #2
Doc Al
Mentor
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Start by finding the current that flows through the wire.
 

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