Magnetism also called lines of force APPLICATIONS OF MAGNET MAGNETIC FLUX Motors, generators, telephones, relays, loudspeakers, computer hard drives and floppy disks, anti-lock brakes, cameras, fishing reels, electronic ignition systems, keyboards, t.v. radio components, Transmission equipment. the amount of magnetic field (or number of lines of force) produced by the magnetic source WHAT IS A MAGNET? A magnet is a material or object that produces a magnetic field. A permanent magnet is a piece of ferromagnetic material (such as iron, nickel or cobalt) which has properties of attracting other pieces of these materials. It has two poles, North and South MAGNETIC FIELD area around the magnet a force that exists around the magnet symbol is phi (ф) Unit is weber (Wb) NOTE: 1 x 10^8 lines of force or magnetic field lines = 1 Weber MAGNETIC FLUX DENSITY the amount of flux passing through a defined area that is perpendicular to the direction of the flux. Symbol is B Unit is Tesla (T) Formula B = ф / A NOTE: 1 Tesla = 1Weber/m^2