The thermo emf of a thermocouple varies with the temperature θ of the hot junction as E =…
Physics · NEET · NTA Exams — Properties of Solids and Liquids
The thermo emf of a thermocouple varies with the temperature θ of the hot junction as E = a θ + b θ2 in volts, where the ratio a/b is \(700^{\circ} \mathrm{C}\). If the cold junction is kept at \(0^{\circ} \mathrm{C}\), then the neutral temperature is
- \(700^{\circ} \mathrm{C}\)
- \(350^{\circ} \mathrm{C}\)
- \(1400^{\circ} \mathrm{C}\)
- No neutral temperature is possible for this thermocouple
Answer
(B) 350^ C
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