1. The problem statement, all variables and given/known data A piece of copper wire is formed into a single circular loop of radius 10 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.70 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. 2. Relevant equations Emf = -NAB/t P = V(^2)/R E = Pt 3. The attempt at a solution I used The first equation to find emf... -.0489V with that I plugged it into the second equation (for R I took my resistance per unit length times the circumference of my circle - pi*d) so for my power I got .0489^2/.0207 = .1155 Then I thought I would just plug that number into the third equation E = .1155w(.45s) which would give me .052 J but this isnt the right answer. Where did I go wrong?