Physics- P1a- You're in charge!

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YOU'RE IN CHARGE

  • Supplies of non renewable fuels like coal, oil and gas can't be replaced in a short period of time.
  • Renewable resources like solar and wind energy can be however but they have their disadvantages.

    WIND POWER

Pros- Quiet (is debatable)

  • Can be on land or on sea
  • They don't give off any form of emissions

Cons- there needs to be an average wind speed of more than 6m per second

  • They can be visually intrusive
  • They can disturb bird migration patterns

    TRANFORMERS

    • A device that changes voltage of an alternating current supply.
    • Step UP transformer increases voltage
    • Step DOWN transformers decrease the voltage
    THE NATIONAL GRID
    • 230V
    • Energy is transfered at a low current but a high voltage as when a current flows a lot of energy is lost as heat.
    PLUGS

    The Cable

    • Consists of 2 or 3 inner wires with thick plastic protection
    • The wire…

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