SOURCES OF ELECTRICITY
Electricity can be created by several means: Friction, Heat, Light, Pressure, Chemical Action, or Magnetic Action.
Only a few of these sources of energy are used in the automobile. The battery produces electricity through chemical action, and the alternator produces electricity through magnetic action.
1,Friction - creates static electricity.
2.Heat -can act upon a device called a thermo couple to create DC.
3.Light applied to photoelectric materials will produce DC electricity.
4.Pressure applied to a piezoelectric material will produce DC electricity.
5.Chemical Action of certain chemicals will create electricity.