A thermocouple of negligible resistance produces an e.m.f. of 40µV/C in the linear range of temperature. A galvanometer of resistance 10Ω whose sensitivity is 1µA/div, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be?<p></p>

A thermocouple of negligible resistance produces an e.m.f. of 40µV/C in the linear range of temperature. A galvanometer of resistance 10Ω whose sensitivity is 1µA/div, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be?

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Question:

A thermocouple of negligible resistance produces an e.m.f. of 40µV/C in the linear range of temperature. A galvanometer of resistance 10Ω whose sensitivity is 1µA/div, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be?

Solution: