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Published byGiles Ramsey Modified over 9 years ago
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Magnetism
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Magnets Magnets: -opposite ends attract -like ends repel -most metals attract to magnets -we utilize magnetism and make compasses from Earth’s magnetic field -The Earth is one big magnet with North and South poles. -Magnets can be permanently magnetic or temporarily magnetic
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Electricity and Magnetism Electricity and Magnetism are Related Electricity flowing through a wire creates a magnetic field around the wire This creates an Electromagnet = A temporary magnet made of iron wire carrying an electric current.
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Strength of Electromagnet You can increase the strength of an electromagnet by… increasing the number of coils. (a straight wire has a weak magnetic field) increasing the amps of current.
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Electromagnetic Induction An electric current produces a magnetic field and a magnetic field can produce an electric current *Running electric current through a wire or solenoid wrapped around iron creates a magnetic field or a magnet. EX: electromagnet
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Electric Charge *Moving a loop of wire through a magnetic field creates an electric charge. EX: Generators or simple motors
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Generators Generators: produce electric current by rotating a loop of wire through a magnetic field. The rotating magnets are connected to a turbine. The turbines are large wheels that rotate due to steam. The steam is created by the burning of fossil fuels or nuclear power
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