In a metal with positive Thomson coefficient, current is passed from the lower temperature to higher temperature side. Then heat will be

Options

A. absorbed
B. constant
C. evolved
D. either 'b' or 'c'

Answer

A

Explanation

Accoring to positive Thomson's effect the potential at a point of lower temperature is lower than at the point at higher temperature which is at higher potential. When current is passed from lower temperature to higher temperature of a metal, work is to be done , hence energy is absorbed.