Home
Class 12
PHYSICS
The junctions of a Ni-Cu thermocouple ar...

The junctions of a `Ni-Cu` thermocouple are maintained at `0^@ C and 100^@ C`. Calculate the Seebeck emf produced in the loop. `a_(Ni, Cu) = 16.3 xx 10^(-6) V^@ C^(-1)` and `b_(Ni, Cu) = - 0.042 xx 10^(-6) V^@ C^(-3)`

Text Solution

Verified by Experts

`epsilon_(Ni, Cu= a_(Ni, Cu) theta + 1/2 b_(Ni, Cu) theta^2`
`=(16.3 xx 10^(-6) xx 100) V + 1/2 (-0.042 xx 10^(-6) xx 10^4 )V`
`1.42 xx 10^(-3) V`.
Promotional Banner

Topper's Solved these Questions

  • THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT

    HC VERMA|Exercise Short Question|9 Videos

  • THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT

    HC VERMA|Exercise Objective 1|8 Videos

  • THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT

    HC VERMA|Exercise Exercise|24 Videos

  • THE SPECIAL THEORY OF RELATIVITY

    HC VERMA|Exercise Exercise|28 Videos

  • X-Rays

    HC VERMA|Exercise Exercise|27 Videos

Similar Questions

Explore conceptually related problems

The temperatures of the junctions of a bismuth-silver thermocouple are maintained at 0^@ C and 0.001^@ C . Find the thermo-emf (Seebeck emf) developed. For bismuth-silver, a = - 46 xx 10^(-6) V^@ C^(-1) and b= -0.48 xx 10^(-6) V^@ C^(-2) .

Two meter scales, one of steel and the other of aluminum, agree at 20^@C . Calculate the ratio aluminum-centimeter/steel-centimeter at (a) 0^@C , (b) 40^@C and (c) 100^@C . alpha_(steel) = 1.1 xx 10^(-5)C^(-1) and alpha_(aluminum)=2.3 xx 10^(-5)C^(-1) .

Calculate the uncertainty in position of an electron, if Deltav = 0.1% and v = 2.2 xx 10^(6) ms^(-1) .

A platinum resistance thermometer reads 0^0 and 100^0 at the ice point and boiling point of water respectively. The resistance of a platinum wire varies with Celsius temperature theta as R_t = R_0 (1+alphatheta + betatheta^2) , where alpha = 3.8 xx 10^(-3) ^0 C^(-1) and beta= -5.6 xx 10^(-7) ^0 C^(-2) . What will be the reading of this thermometer if it is placed in a liquid bath maintained at 50^0 C ?