A magnetic field is the distribution of a magnetic force around a magnet.
- north and south are magnetic characteristics in electric fields
- similar poles repel (north and north or south and south)
- opposite poles attract (north and south)
- a test compass can be used to design a magnetic field
- the general direction is from the north end to the south
to test this out, you can sprinkle iron fillings around the magnet, which will form in a circular shape like shown above
Earth acts like a giant, permanent magnet which produces its own magnetic field
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A Bunch of Terms
Ferromagnetic metals - metals such as iron, nickel, cobalt, or mixtures of these three that attract magnets.
Dipoles - small rotating magnets that make up large magnets.
Magnetic Induction - the ability of ferromagnetic materials to be magnetized
Demagnetization - loss of magnetic strength in a ferromagnetic material
Reverse magnetization - reversal of the polarity of a magnet
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Oersted's Principle states that charge moving through a conductor produces a circular magnetic field around the conductor
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