AQA Core Physics | Electrical Energy

Electrical Appliances

-Electrical appliances can turn electrical energy into useful energy at the flick of a switch, however some is still wasted.

-Uses of everyday electrical applainces include heating, lighting, making objects move and creating sound and visual images.

-An electric appliance is designed for a specific purpose and should waste as little erngy as possible to be efficient and cost effective.

Electrical Power

-The energy we supply per second to an object is the power of the object.

-The more powerful an appliance, the faster the rate at which it transfers energy. 

-We measure power in Watts or Kilowatts. 1 watt is a rate of transfer of energy at 1 joule…