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A thermocouple of negligible resistance ...

A thermocouple of negligible resistance produces an e.m.f. of 40 uV/°C in the linear range of temperature. A galvanometer of resistance 10 ohm whose sensitivity is 1 uA/div, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be [AIPMT (Mains)-2011] (1) 0.1°C (2) 0.25°C (3) 0.5°C (4) 1°C en bond Office Anko

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