a) State Faraday's law of electromagnetic induction and Lenz's law. (4 marks) b) A rectangular coil of 200 turns, each of area 0.05 m², is placed in a uniform magnetic field of flux density 0.8 T. The coil is rotated from a position where its plane is parallel to the field to a position where its plane is perpendicular to the field in a time of 0.02 s. i) Calculate the initial magnetic flux linkage through the coil. (2 marks) ii) Calculate the final magnetic flux linkage through the coil. (2 marks) iii) Determine the average e.m.f. induced in the coil during this rotation. (3 marks) c) A straight conductor of length 0.5 m moves with a velocity of 20 m/s perpendicular to a magnetic field of flux density 0.4 T. Calculate the e.m.f. induced in the conductor. (2 marks) d) State ONE practical application of electromagnetic induction. (1 mark)