A thermocouple of negligible resistance produces an e-m-f- of 40- V-C in the linear range of temperature- A galvanometer of resistance 10 ohm whose sensitivity is 1- Adiv- is employed with the termocouple- The smallest value of temperature difference that can be detected by the system will be

The correct option is D 0.25C 1 nbsp;division nbsp;≡ 1μ A Current for 1C = 40μ v/10 = 4μ A 1μ A nbsp;≡1/4 nbsp;C nbsp; nbsp;= 0.25 ...

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Thermal Expansion

A thermocoupl...

Question

A thermocouple of negligible resistance produces an e.m.f. of $40 μ V / C$ in the linear range of temperature. A galvanometer of resistance $10 o h m$ whose sensitivity is $1 μ A d i v$ , is employed with the termocouple. The smallest value of temperature difference that can be detected by the system will be

0.5C

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0.1C

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0.25C

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