Electric Circuits

• Ohm's law 


  The potential difference across a conductor is directly proportional to the current in the conductor at a constant temperature.
• EMF 


  Maximum energy supplied by the battery PER UNIT CHARGE
• Ohmic conductor 


  A conductor which obeys Ohm's law.
• Examples of an Ohmic conductor


  • Silver
  • Copper wire
  • Metals
• Examples of Non-Ohmic conductor


  • Light Bulb filament
  • Semi conductors like: Diodes and transistors.