Magnetism

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• Magnetism

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• Ferromagnetic Materials
• Iron, Nickel, and Cobalt

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• Magnets have Magnetic Fields.
• Moving electrons produce magnetic fields.
• Earth's Magnetic Field

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There is more to it than like poles repel and
opposite poles attract. It has to do with
electrical charge.
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Magnetic Domains
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• Magnetic Tape

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• Electric Currents and Magnetism.

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Oersteds discovery
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Moving electrons create a magnetic field!
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X
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solenoid (or inductor)
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An electromagnet
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SIM
Magnetic fields that move across a wire create
electricity!
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An electric motor converts electricity to motion.
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An electric generator converts motion to
electricity.
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Power plants create electrical power using
generators called turbines.
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Your Home
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Electricity is not entirely efficient.
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Sources

• Bloomfield, How Things Work.
• Krauskopf Beiser, The Physical Universe. 10th
  ed.
• Tillery, Physical Science.