. A fi gure skater glides along a circular path of radius 5.00 m. If she coasts around one half of the circle, fi nd (a) the magnitude of the displacement vector and (b) what distance she skated. (c) What is the magnitude of the displacement if she skates all the way around the circle?
Electromagnetic Induction Goals • To examine experimental evidence that a changing magnetic field induces an emf • To learn how Faraday’s law relates the induced emf to the change in flux • To determine the direction of an induced emf • To calculate the emf induced by a moving conductor • To learn how a changing magnetic flux generates an electric field • To study the four fundamental equations that describe electricity and magnetism Introduction • How is a credit card reader related to magnetism • Energy conversion makes use of electromagnetic induction. • Faraday’s law and Lenz’s law tell us about induced currents. • Maxwell’s equations describe the behavior of electric and magnetic fields in any situation. Induced curr