College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 50

A coil of 10.0 turns is in the shape of an ellipse having a major axis of 10.0 cm and a minor axis of 4.00 cm. The coil rotates at 100 rpm in a region in which the magnitude of Earth's magnetic field is 55 T. What is the maximum voltage induced in the coil if the axis of rotation of the coil is along its major axis and is aligned (a) perpendicular to Earth's magnetic field and (b) parallel to Earth's magnetic field Note: The area of an ellipse is given by A = ab , where a is the length of the semi major axis and b is the length of the semi minor axis.