A square wire loop with 2.00 m sides is perpendicular to a uniform magnetic field, with half the area of the loop in the field as shown in Fig. 30-49. The loop contains an ideal battery with emf E = 12.0 V. If the magnitude of the field varies with time according to B = 0.603 - 1.25t, with B in teslas and I in seconds, what are (a) the net emf in the circuit and (b) the direction of the (net) current around the loop?

Explanation

(a) 14.5, (b) current is in the sense of the total emf (counterclockwise)