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Copper in health
Photo of electric train
Picture 1. This train relies on copper cables in its motor and to get its supply of electricity from the overhead wires. A car uses electric motors as well.
The roles of copper
Copper is an excellent electrical conductor (see electrical properties). This is why it is used in so many electrical applications - including electric motors.

We use electric motors in the home, the garden and at work. Here are some places where electric motors are used:

An electric lift One electric motor moves the lift up and down. Another operates the doors.
A car

Cars have several electric motors.
The starter motor turns the petrol engine to get it going.
Other motors work the windscreen wipers.
Some cars have electric motors to operate the windows and even the wing mirrors.

An electric train An electric train has a powerful motor to drive it.

In this electronic resource (e-source), we'll look at how electric motors work and how they can be made efficient.

This e-source has 4 pages:
  1. Introduction
  2. What makes it turn
  3. The motor effect
  4. Making the most of energy

Using these e-sources
There are a number of interactive features in this e-source:

A glossary of terms: any word with a glossary entry is highlighted. Clicking on the word will open a new window with a definition of that word.

Quick questions: at the end of each page is a quick question to test your understanding of that page. Type in your own answer then click on the button to see how well you did.

Quiz: at the end of each unit, there is a quick quiz to see how well you understand the ideas.

Roll over diagrams: many of the diagrams have highlights or sequences. You can see these by rolling your cursor over part of the picture or part of the text. The text has a roll over highlight.

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