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NUE 052 - Sources of Electrical Energy

Electricity is a form of energy. A law of energy, Conservation of Energy, says that energy cannot be created or destroyed. However, energy can be converted from one form to another.
Some of the most common energy sources are:
  • chemical
  • mechanical
  • heat
  • light
 
Chemical
 
Some examples of chemical energy being converted to electrical energy are:
Lead acid battery
  • lead acid battery (car battery)
  • carbon zinc battery (D cell)
  • electrolyte with dissimilar metal
Mechanical
 
Some examples of mechanical energy being converted to electrical energy are:
Alternator
  • friction
  • piezoelectric crystal
  • magnetism (moving conductor in a magnetic field such as an alternator)
Heat
 
An example of heat being converted to electrical energy are:
Thermocouples
  • thermocouple
Light
 
An example of light being converted to electrical energy are:
Solar panels on a space station
  • solar panel
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