Q What is Seebeck effect?
Seebeck revealed that in a circuit consisting of two dissimilar metals like iron and copper an emf is developed when the junctions are maintained at different temperatures. Two different metals connected to form two junctions are called thermocouple. The emf build up in the circuit is thermo electric emf. The current by the circuit is called thermoelectric current. This effect is entitled as thermoelectric effect or Seebeck effect.