Magnetic Fields

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  • Created by: GD2016
  • Created on: 10-03-16 18:09

What is a magnetic field?

A magnetic field is a region where magnetic materials such as iron, experience a force upon them.

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The magnetic Field around a coil of wire

  • Strong
  • Coil wrapped around the outside of the magnet
  • If the current stops, the magnetic field disappears
  • A magnet whose magnetic field can be turned on or off is called an electromagnet
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Magnetic field strength

To increase the srength of the magnetic field, you could...

  • Add a magnetically 'soft' iron core
  • Increase the current
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Electromagnet use in real life- Example

Electromagnets are used in some cranes, in order to lift metal and deposit it elsewhere.

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