A long solenoid having 450 turns per m carries a current of 1.6 A. At the centre of the solenoid a coil of 180 turns with cross sectional area `3.5 cm^(2)` is placed having its axis parallel to the field produced by the solenoid. What will be the amount of induced emf when the direction of current in the solenoid is reversed within 0.03 s?
