1. The problem statement, all variables and given/known data . A circular coil of radius 5.0 cm and resistance 0.20 Ω is placed in a uniform magnetic field perpendicular to the plane of the coil. The magnitude of the field changes with time according to B = 0.50e-20t T. What is the magnitude of the current induced in the coil at the time t = 2.0 s? 2. Relevant equations Φ = BAcos(0) = BA emf = -dΦB /dt = -d(BA)/dt = -A * d(B)/dt 3. The attempt at a solution I differentiated that magnetic field and got -10e-20t, then multiplied that times pi*(.052), and ultimately divided by .2 Ω. My answer is 1.66*1018, which is nowhere near any of the answers. I feel like I'm following a logical path but obviously this isn't working, so I don't know what else to do.