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Practical Physical Science

Lesson 12:4 Magnetism and Electricity

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Objectives

Explain how magnetism and electricity are related.

Describe electromagnetism.

List devices that use electromagnetism.

Explain how magnetism can be produced from electricity.

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Electricity can create a magnetic field.

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Electromagnetism happens when electrons move through a material that conducts.

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Making an electromagnet

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Bigger batteries make stronger magnets.

More turns around the magnet make stronger magnets

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Using Electromagnets

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Motors

Three parts:

  • Permanent magnet
  • Electromagnet
  • Alternating current

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Appliances with electric motors

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Q p. 366 Lesson 12:4 Magnetism and Electricity

WB 62 Terms Review: Magnets and Electromagnetism