A potentiometer wire 10m long and having 20 Ω resistance is connected in series with a battery and a resistance R = 2160 Ω . A Daniel cell of emf 1.08 v is balanced across the P.D. of the resistance R. The emf of thermo couple is balanced across 300 cm of the wire. The emf of thermo couple is

Question

Eshan · Answer

Current through the potentiometer wire= Hence potetial difference across the potentiometer wire= Therefore, emf of thermocouple=potential difference over 3m length of wire= =3mV

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A potentiometer wire 10m long and having 20 Ω resistance is connected in series with a battery and a resistance R = 2160 Ω . A Daniel cell of emf 1.08 v is balanced across the P.D. of the resistance R. The emf of thermo couple is balanced across 300 cm of the wire. The emf of thermo couple is

A potentiometer wire 10m long and having 20 Ω resistance is connected in series with a battery and a resistance R = 2160 Ω . A Daniel cell of emf 1.08 v is balanced across the P.D. of the resistance R. The emf of thermo couple is balanced across 300 cm of the wire. The emf of thermo couple is

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