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A long straight wire carries a steady direct current. A circular loop of conducting wire is placed directly below the straight wire such that the wire is directly above the plane of the loop as shown in the following figure. The loop falls vertically below the wire due to gravity. current wire circular loop of conducting wire direction of fall (i) Explain why an e.m.f. is induced in the loop. (ii) Determine and explain the direction of induced current in the circular loop. (iii) If the circular loop has a radius of 5.0 cm, and the average magnetic field within the loop decreases from 120 mT to 30 mT in 0.040 s. Calculate the magnitude of the average e.m.f. induced in the loop