Thermoelectric Effect

Question 1

Thermoelectric effect

Answer 1

also known as seebeck effect, states that when the two dissimilar wire are joined together and forms a junction maintaning different temperature a small emf is produced in the wire that is known as thermoelectric effect.Heat is converted into electrical energy.Its application is , it is used in beverage company.

Question 2

Petliers effect.

Answer 2

Two junction joined keeping the same temperature and heat is evolved at one point and absorbed in one point.Electrical energy is changed into heat energy.

Question 3

Neutral temperature and temperature of inversion.

Answer 3

if the temperature of hot junction increases keeping the cold junction constant the thermo emf increases with the increase in hot junction and becomes maximum at certain point which is known as neutral temp.Denoted bu theta n . when the temp of hot junction increases above the neutral temp thermo emf start to decrease which is known as temp of inversion.Denoted by theta i. It depends on the nature of material and temp of hot junction.

Question 4

Discuss the variation of thermo emf.

Answer 4

First define theta i and theta n. Then write it was found that the temp of neutral is equal to the arthemetic mean of emp of cold junction and temp of inversion. FORMULA:Tn=Ti+Tc/2