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Electrical energy**

Electricity can be used to transfer energy from one place to another. Things with energy can make other things happen.

For example, electricity transfers energy from the power station to our house where it is used to make objects work. It makes our hair dryers and stoves operate.

Electrical energy can be produced in several ways.

It can be produced by a generator. But it can also be produced by a battery in a chemical reaction.

Some batteries are cheap but some are very expensive. Which is better?

  1. Name three examples where the electrical energy is used to make household machines work.
  2. Name some examples of where electrical energy is used to heat things.
  3. What are some advantages of electrical motors over petrol-driven motors?

You may need to complete your investigation before you have clear ideas about some of these questions.

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