Or a) Explain the variation of thermoelectric emf with the temperature of the hot junction of a thermocouple. b) A potentiometer circuit is shown in…
Class 12 Physics · 2082 · Solved Question with Answer
Or
a) Explain the variation of thermoelectric emf with the temperature of the hot junction of a thermocouple.
b) A potentiometer circuit is shown in figure.
If the total length of potentiometer wire is 4m and has resistance 10Ω and the balance point is obtained at a length of 240cm, calculate the value of unknown emf E.