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Transcript
Magnetism Ferromagnetic Materials –Iron, Nickel, and Cobalt – Magnets have Magnetic Fields. – Moving electrons produce magnetic fields. – Earth's Magnetic Field There is more to it than like poles repel and opposite poles attract. It has to do with electrical charge. Magnetic Domains Magnetic Tape Electric Currents and Magnetism. Oersted’s discovery Moving electrons create a magnetic field! solenoid (or inductor) An electromagnet SIM Magnetic fields that move across a wire create electricity! An electric motor converts electricity to motion. An electric generator converts motion to electricity. Power plants create electrical power using generators called turbines. Your Home Electricity is not entirely efficient. Sources • Bloomfield, How Things Work. • Krauskopf & Beiser, The Physical Universe. 10th ed. • Tillery, Physical Science.
