What is the peak emf generated by rotating a 1100 -turn, 25 cm diameter coil in the Earth's 5⋅10 −5 T magnetic field, given the plane of the coil is originally perpendicular to the Earth's field and is rotated to be parallel to the field in 13 ms ? Things to Prepare 1. How do you calculate the angular velocity? 2. What is the angular displacement when the coil moves being perpendicular to being parallel to the Earth's field? How long does it take to achieve this? Peakemf = V