The square coil of the following figure has sides I = 30 cm long and is tightly wound with N = 150 turns of wire. The resistance of the coil is R = 27.0 Ω. The coil is placed in a spatially uniform magnetic field that is directed perpendicular to the face of the coil and whose magnitude is decreasing at a rate dB/dt = -0.040 T/s.
a) What is the magnitude of the emf induced in the coil?
b) What is the magnitude of the current circulating through the coil?