Answer to Question #74121 in Electricity and Magnetism for Marc

Question

A conducting ring of radius 0.15m is set to turn around a vertical axis in a region where there is a horizontal magnetic field. The intensity of the magnetic field is 0.04T. a) What is the magnitude of the maximum value attained by the magnetic flux through the ring? b) If the ring takes 2 seconds to do a full 360 degree revolution, what is the magnitude of the average emf produced as it does one quarter turn, passing from an orientation parallel to the field to an orientation perpendicular to it?