A circular coil that has 100 turns and a radius of 10 cm lies in a magnetic field that has a magnitude of 0.0650 T directed perpenducular to the coil. A) what is the magnetic flux through the coil? B) the magnetic field through the coil is increased steadily to 0.100 T over a time interval of 0.50 sec. What is the magnitude of the emf induced in the coil during the time interval?