A rectangular conducting loop of width 0.080m and length 0.12m is placed in a region where a uniform magnetic field is directed into the page. The magnitude of the field increases linearly from 0.20T to 0.60T in 25ms. The plane of the loop remains fixed during this interval.
(a) Calculate the magnitude of the average emf induced in the loop during the interval.
(b) As viewed from the side receiving the field lines, does the induced current circulate clockwise, counter-clockwise, or not at all? Identify which long side of the rectangle (left or right as viewed from that side) becomes the higher electric potential and defend your answer with physical reasoning.