. A circular loop with 100 turns in the plane of the paper lies in 0.750 T magnetic field pointing into the paper. The loop diameter changes from 20.0 cm to 5.00 cm in 0.300 s. (a) Calculate the magnitude induced emf. (b) Average induced current if the coil resistance is 2.50 . (c) Direction of the current. (Explain how you got the direction).