What is a thermocouple? What do you mean by the thermoelectric effect? Discuss the variation of thermo emf in a thermocouple with the change in temperature. What is the relation between the tempera...

A couple of wires of dissimilar metals forming a loop and producing the thermoelectricity is called thermocouple.

When two wire of different material are joint to form closed circuit and the two jointed end are placed at different temperature then a small emf is develop in that closed circuit and small current flow through the closed circuit this process is called seebeck’s effect or thermoelectric effect.

Variation of thermo emf with temperature

For explanation of the variation of the thermo...

What do you mean by Peltier's effect? How is seek beck different from Peltier effect? Explain.

When current flows through the junctions of two dissimilar metals in the form of closed circuit, heat is absorbed at one junction and evolved on the other junction this effect is called peltier effect.

When two wire of different material are joint to form closed circuit and the two jointed end are placed at different temperature then a small emf is develop in that closed circuit and small current flow through the closed circuit this process is called seebeck’s effect or thermoelectric effect.