Thermo emf of a thermocouple varies with the temperature of the hot junction as = a + b 2…
Physics · Class 12 · CBSE — Current Electricity
Thermo emf of a thermocouple varies with the temperature \(\theta\) of the hot junction as \(\varepsilon\) = a \(\theta\) + b \(\theta\) 2 volt where the ratio ( \(\frac ab\) ) is 700°C. If the cold junction is kept at 0°C, then the neutral temperature is:
- 700°C
- 350°C
- 1400°C
- no neutral temperature is possible
Answer
(B) 350°C
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