Electricity Generation. with Magnets or Lemons. If you want to do something useful - you need energy. We feel tired when we run out of energy So we eat to give us energy. Our energy comes from food. When we eat we can walk, think, run, lift, turn, push, pull, and ------
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Magnets or Lemons
We might use
Without electricity our lives would be very different.
Supply of electricity
One hundred million million million
or one hundred billion billion
Electrons are very, very small
We need something to provide energy to push the electrons around the circuit.
2 main choices:
- uses chemistry to release energy
In a car
a large battery is used
to start the engine and light the lamps.
Magnet has to move to make electricity
- even when we work hard.