Magnets and magnetic fields



We’re all familiar with the fact that a magnet has a north pole and a south pole, and that any magnet will exert a force on another magnet.  In this video, we’ll look in more detail at how two magnets can interact with one another, the difference between permanent and induced magnets, and how a simple compass allows us to find our bearings.  We’ll then go on to look at the magnetic field that is created when an electric current flows through a straight piece of wire or a solenoid (coil of wire).

Key Words

permanent magnet, induced magnet attract, magnetic field line, repel, compass, non-contact force, plotting compass, magnet, lines of magnetic flux, magnetism, magnetic flux lines, pole, solenoid, north pole, south pole, magnetic force, right-hand grip rule