A simple version of a bicycle speedometer comprises moving a magnet past a sensing coil which records each and every time the wheel forms a revolution. The magnetic field strength averages 0.52 T and passes by the sensing coil in 0.05 seconds. The sensing coil consists of 30 turns of wire having a radius of 0.68 cm for each and every turn; determine how much emf is generated? What happens to this emf when the bicycle travels faster?