Physics- P1a- You're in charge!

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…