When you walk into a room and flip a light switch, a lightbulb turns on, illuminating the area. But how does one small switch do such a large job? Why Do the Lights Turn On? enlightens readers about the science behind electricity and circuits through full-color illustrations and photographs.Many electrical devices todayaair conditioners and refrigerators, for examplea are made to use less electricity than the ... This list shows you how many watts of power some common electrical devices use when theya#39;re on: 4 watts 55 to 90anbsp;...
|Title||:||Why Do the Lights Turn On?|
|Author||:||Barbara J. Davis|
|Publisher||:||Infobase Publishing - 2010-03-06|