Home
Class 12
PHYSICS
Find the thermo-emf developed in a coppe...

Find the thermo-emf developed in a copper-silver thermocopule when the junctions are kept at `0^@ C` and `40^@ C`. Use the data in table.

A

150 mV

B

80 mV

C

144 mV

D

120 mV

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    ERRORLESS |Exercise Assertion & Reason|2 Videos
  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)|28 Videos
  • KINETIC THEORY OF GASES

    ERRORLESS |Exercise QUESTIONS|126 Videos

Similar Questions

Explore conceptually related problems

Find the neutral temperatuer and inversion temperature of copper-iron thermocouple if the reference junction is kept at 0^@ C . Use the dat in table.

The thermo emf of a copper-constantan thermocouple with one junction at 0^(@)C and the other at t^(@)C is given by the relation varepsilon=at=(1)/(2)bt^(2) where varepsilon is in muV, a=41 mu V.^(@)C^(-2) . If the thermo emf developed is 5.5 mV, find the temperature of the hot junction.

A thermocouple is made of iron and constantan. Find the emf developed per 0^(@)C difference of temperature between the junctions, given that the thermo emf of iron and constantan against platinum are +1600 and -3400 mu V " per "100^(@)C difference of temperatures.

Find the neutral and inversion temperatures for Ni-Cu thermocople with the cold junction at 0^@C . Use data from previous example.

A large block of ice is placed on a table when the surroundings are at 0^@C .

Thermocouples are used to measure temperature in the linear parts of the emf versus temperature graph wilth cold junction at 0^(@)C . The thermo electric power of Pt, Ni thermocouple are =-4 and -20 microcolt per .^(@)C respectively. What will be the magnitudes of emfs of the thermocopule when thecold junction is at 0^(@)C and the hot junction is at 100^(@)C ?

The temperatures of the junctions of a biamuth-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^@ V^@ C^(-2) .

Calculate the emf of silver-iron thermocouple with junction at 10^(@) C and 80^(@)C given alpha =+13.31 mu V.^(@)C^(-1) and beta=-0.019 mu V.^(@)C^(-2) .

A thermocouple produces a thermo emf of 40muV//.^(@)C . A thermopile is made by using 150 such thermocouples. The temperature of the two junctions is 20^(@)C and 40^(@)C How much thermo emf generates in the thermopile

The thermoelectric powers of iron and copper with respect to lead are +10.5 and -3.5 mu V respectively at 100^(@)C . Find the emf of Cu-Fe thermocouple when its junctions are maintained at 50^(@) and 150^(@) C.