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ELECTROMAGNETS

After reading this section you will be able to do the following:

  • Discuss the relationship between electricity and magnetism that is demonstrated.

Questions

  1. Describe what happens when the power is turned on in this activity.
  2. How can turning on the electricity allow the iron crane to pick up the car?
  3. Do you think electricity and magnetism are somehow related?

How can electricity be used to make a magnet?

In this experiment you used electricity to make a temporary magnet, called an electromagnet. As long as the electric current was on, the iron crane was a magnet and could pick up ferromagnetic objects. When the electricity was turned off, the magnetizing cause was no longer present, so the object was not attracted to the iron crane. So, let's see how electricity is able to make a magnet.