A cell of emf 1.6 V is connected across a potentiometer wire of length 500 cm. The cell has negligible resistance. A thermo couple whose cold junction is at 0^@ C and hot junction at 80^@ C is connected in the secondary circuit. The balancing length is found to be 125 cm. Find the thermo emf per degree centigrade difference of temperature of the junctions.

A cell of emf 1.6 V is connected across a potentiometer wire of length

1.	A cell of emf 1.6 V is connected across a potentiometer wire of length 500 cm. The cell has negligible resistance. A thermo couple whose cold junction is at 0^@ C and hot junction at 80^@ C is connected in the secondary circuit. The balancing length is found to be 125 cm. Find the thermo emf per degree centigrade difference of temperature of the junctions.
Answer» `0.005 V//^@ C` `0.05V//^@ C ` `0.5 V//^@C ` `5V//^@ C` ANSWER :A

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