DF E= Dt EMF induced in a coil due to changing magnetic field D = BA Cos(8) Magnetic Flux 1. A 9.6 cm diameter circular loop of wire is in c 1.1 T magnetic field. The loop is removed from the field completely in 0.15 seconds. What is the average induced emf? 2. A 10.2 com diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.63 T pointing up. During the course of 0.15 seconds, the field is changed to 0.25 T pointing down. What is the average induced emf in the coil? 3. What is the direction of the induced emf in each circular loop below due to the current in the straight wire next to each loop? (Use the formula for Faraday's Low given in class). / decreasing I increasing (a) (b) / constant / increasing