Generating Electricity

1
Generating Electricity

• How electricity is produced
• How to maximise the energy in the electricity.
• Recognising alternating current and representing
  it graphically.
• Transmission of alternating current through the
  NATIONAL GRID

2
How electricity is produced

• When a coil of ______ cuts through ________ field
  lines, a voltage is _________ across the coil of
  ______.
• You can either move a ________ through a coil or
  rotate a ________ in a ________ field.
• The more ______ field _____ are cut each second
  the greater the i______ v_______.

3
How to maximise the energy in the electricity

• Cut through the field lines at a ______ speed.
• Increase the strength of the ______ _____.
• Increase the number of ______ in the wire.

4
Recognising alternating current and representing
it graphically.
5
(No Transcript)
6
Transmission of alternating current through the
NATIONAL GRID

• If a wire carries a large current it heats up and
  energy is lost.
• To transport the electricity across the NATIONAL
  GRID transformers are used.
• A transformer can change the voltage across the
  wires carrying the current.
• High voltage means low current
• Low voltage means a high current

7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)