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Electromagnetism. Objectives  SPI 0807.12.1 Recognize that electricity can be produced using a magnet and wire coil.  SPI 0807.12.2 Describe the basic.

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Presentation on theme: "Electromagnetism. Objectives  SPI 0807.12.1 Recognize that electricity can be produced using a magnet and wire coil.  SPI 0807.12.2 Describe the basic."— Presentation transcript:

1 Electromagnetism

2 Objectives  SPI 0807.12.1 Recognize that electricity can be produced using a magnet and wire coil.  SPI 0807.12.2 Describe the basic principles of an electromagnet.  SPI 0807.12.3 Distinguish among the Earth’s magnetic field, a magnet, and the fields that surround a magnet and an electromagnet I Can: 1.Describe the basic principles of an electromagnet 2.Identify the relationship between an electric current and a magnetic field. 3.Distinguish among the Earth’s magnetic field, a magnet, and an electromagnet.

3 Properties of Magnets  Magnet: any material that attracts iron or materials containing iron. 1.Two magnetic poles: North and South 2.Magnetic force  Like poles repel, opposite poles attract  Strongest force at poles 3.Magnetic field: region in which magnetic forces act.

4 Earth as a Magnet

5 Electromagnetism  Interaction between electricity and magnetism  Components  Battery  Copper wire  Iron core  Solenoid: coil of wire  Make stronger by adding more loops in the solenoid.

6 Uses of Electromagnets  Doorbells  Electric Motors  Telephones

7 Generate Electricity  Produce stronger electric current by moving iron core through coil of wire.  Faster movement → greater current  Used  Generators  Transformers  Electrical power for your home


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