Solve problems in electromagnet circuits 2
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1 Revision02 Ferromagnetic Materials Iron, Nickel, and Cobalt
Transcript of Solve problems in electromagnet circuits 2
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Ferromagnetic MaterialsIron, Nickel, and Cobalt
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Magnets
– Magnets have Magnetic Fields.
– Moving electrons produce magnetic fields.
– Earth's Magnetic Field
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Magnets cont.
• 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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Oersted’s 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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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.
