Magnetism & Electricity.

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Presentation transcript:

Magnetism & Electricity

Def: The relationship between electricity and magnetism Electromagnetism Def: The relationship between electricity and magnetism An electric current will be produced in a wire that is exposed to a changing magnetic field

Electromagnetism Parts of an electromagnet Soft iron core Wire wrapped in coils

Electromagnetic Induction The current is induced (caused to flow) in a wire when it cuts across magnetic lines of force Can occur two ways: Move the iron core in and out of a coil of wire

Electromagnetism Attach coils to a voltage source and leave core inside coils

Electromagnetism A wire wound into a coil has a much stronger magnetic field than a straight wire Two ways to increase the strength: The more turns in the coil, the stronger the field The more current flowing through the wire, the stronger the field

THE END