Question
Physics Question on Current electricity
When the cold and hot junctions of a thermocouple are interchanged, the thermo emf
A
changes sign
B
remains the same
C
becomes zero
D
is doubled
Answer
remains the same
Explanation
Solution
The thermoemf of thermocouple does not change when the cold and hot junctions of a thermocouple are interchanged, its direction of remains the same.