1. The problem statement, all variables and given/known data A 20 turn wire that has a surface of 400cm^2 is rotating around an axe and is at a right angle to a uniform magnetic field of 0.3T. Find the average magnetic field induced if the speed of the rotation is 10 rotations/second. 2. Relevant equations Faraday's Law 3. The attempt at a solution A = 400cm^2 = 0.04m^2 N = 20 B = 0.3T f = 10Hz V =(Nxdelta phi)/delta t B = phi/A phi = BA = 0.3x0.04 = 0.012wb V= (20x0.012)/0.1 = 2.4 Volts Answer = 9.6 V Can anyone point out where my error is? If there isnt any its possible the answer is wrong.