At constant tempareture differance is voltage generated in thermocouple?

Question

In a thermocouple if the tempareture of hot and cold junction is kept constant would there be a voltage generated constantly?

Answer 1

Yes - that is the basis for using a thermocouple as a measurement device.  If the hot and cold junction are at the same temperature there won't be any voltage difference.  If the system were 'thermodyamically isolated' - eventually the current flow between the two junctions would result in an isothermal system, with no current flow.

Answer 2

yes. a voltage is developed constantly but as the temperature difference is zero, the potential difference or difference in the voltage across the two terminals is also zero as the potential difference is directly proportional to the difference in temperature between the two junctions.

Answer 3

Yes the current will be at a steady level, it will only increase or decrease with a rise or fall of temperature. A thermocouple is a rugged and dependable device,