Powering domestic applicances

• What is direct current supplied by?


  Cella batteries or solar cells
• Where do the charges move

  In 1 direction

  
• D.c has same...


  Size abd direciton
• What is alternating current supplied by

  Plug sockets (mains)
• Alternating current has frequency of 50hz in uk
• Current always changes in a.c.


  Size and direction
• What is the graph

  A.c

  
• Where do electrical appliances transfer energy from

  batteries or the a.c. mains supply.
• The longer an appliance is used for, the more energy it transfers
• Appliances are given power ratings what are they?

  maximum power the appliance can safely operate at.
• The higher the power rating of an appliance...

  the more energy it transfers each second