Q44: Figure P31.44 (page 964) is a graph of the induced emf versus time for a coil of N turns rotating with angular speed v in a uniform magnetic field directed perpen- dicular to the coil’s axis of rotation. What If? Copy this sketch (on a larger scale) and on the same set of axes show the graph of emf versus t
(a) if the number of turns in the coil is doubled,
(b) if instead the angular speed is doubled, and (c) if the angular speed is dou- bled while the number of turns in the coil is halved.