1. The problem statement, all variables and given/known data The magnetic ﬁeld in a loudspeaker is 0.2 T. The wire consists of 270 turns wound on a 3.13 cm diameter cylindrical form. The resis- tance of the wire is 7.9 Ω. Find the force exerted on the wire when 11.6 V is placed across the wire. Answer in units of N. B=.2 N=270 r=1.565 2. Relevant equations I have no idea 3. The attempt at a solution I have no idea Please help me. I realize I am supposed to have tried i, but I have spent about haf an hour looking through my textbook and a studybook for similiar problems and haven;t found them, googled it, looked through this site and wikipedia, and I have no idea.