The coil shown in the figure below is wound across a solenoid that produces a magnetic field given by B = (4.0 + (3.0 s^2)t^2) Tesla. The solenoid has a cross-sectional area of 0.20 m2
(a) What is the direction of the induced current in the resistor?
(b) What is the potential difference, V1 - V2, at t = 3.0 s?