energy transfer by appliances

• Domestic appliances


  Appliances found in homes
• Domestic appliances

  • Transfer electrical energy into other forms of energy
  • Only need to identify transfers to kinetic energy and thermal energy
• Electrical energy transfer in appliances

  1. Electrical energy transferred into kinetic energy

  2. Electrical energy transferred into thermal energy
• Appliances transferring electrical energy to kinetic energy

  • Blender
  • Fan
• Appliances transferring electrical energy to thermal energy

  • Iron
  • Kettle
• Appliances transferring electrical energy to both kinetic and thermal energy

  • Hairdryer
  • Washing machine
• Power rating

  The rate at which energy is transferred, measured in Watts (Joules per second)
• Power ratings of appliances

  • Fan: 20 Watts
  • Blender: 400 Watts
  • Kettle: up to 2200 Watts
  • Iron: up to 2400 Watts
• Appliances designed to generate thermal energy usually have a much higher power rating than appliances designed to generate kinetic energy