The figure shows a uniform, 3 T magnetic field that is norma…

The figure shows a uniform, 3 T magnetic field that is normal to the plane of a conducting, circular loop with a radius of 2.4 cm. The magnetic field is directed out of the paper as shown. What is the magnitude of the average induced emf in the loop if the magnitude of the magnetic field is doubled in 0.4 s? Note: The area of the non-circular portion of the wire is considered negligible compared to that of the circular loop.