1. The problem statement, all variables and given/known data A 200-loop coil of cross sectional area 8.5 cm2 lies in the plane of the page. An external magnetic field of 0.060 T is directed out of the plane of the page. The external field decreases to 0.020 T in 12 milliseconds. What is the magnitude of the change in the external magnetic flux enclosed by the coil? 2. Relevant equations [itex]\Phi[/itex]m = A * B 3. The attempt at a solution Ive tried solving for both values of magnetic flux at each time and finding their difference. However, I still seem to get it wrong. I dont know If I am missing something, any help or tips would be greatly appreciated.