An auditorium has dimensions 10.0 m 3 20.0 m 3 30.0 m. How many molecules of air fill the auditorium at 20.08C and a pressure of 101 kPa (1.00 atm)?

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