1. The problem statement, all variables and given/known data 2. Relevant equations Flux = DeltaB * Area 3. The attempt at a solution: Since the magnetic fields are going in opposite directions through the loop, I assumed that they would have different signs, so I chose 2.0 T to be positive and 1.0 to be negative, so when calculating the change in magnetic field, I did -1.0-2.0 = -3.0. Why is this not the case? Thanks!