8.3 The Thermocouple Thermometer — Physics Tuition Centre, O Level, A Level and Integrated Programme(IP)
The thermo emf of a thermocouple varies with the temperature theta of the hot junction as E=a theta +b theta square V Where the ratio of a and b is 700^°C. If
![EMF vs temperature curve for the Au-Ni thermocouple in the temperature... | Download Scientific Diagram EMF vs temperature curve for the Au-Ni thermocouple in the temperature... | Download Scientific Diagram](https://www.researchgate.net/publication/226423806/figure/fig3/AS:667612740583435@1536182689707/EMF-vs-temperature-curve-for-the-Au-Ni-thermocouple-in-the-temperature-region-between.png)
EMF vs temperature curve for the Au-Ni thermocouple in the temperature... | Download Scientific Diagram
![The thermo emf E (in volts) of a certain thermocouple is found to vary with Q (in C) according to equation (E = 20 Q - Q^220 , where Q is temperature The thermo emf E (in volts) of a certain thermocouple is found to vary with Q (in C) according to equation (E = 20 Q - Q^220 , where Q is temperature](https://i.ytimg.com/vi/8wRnDdAsvaA/maxresdefault.jpg)