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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionEasy2 minQB

PhysicsEasyinteger

Two thermoelectric materials have constant powers +5 and $- 15 μ V K^{- 1}$ . The hot and cold junctions are at 120°C and 20°C. Find emf magnitude in mV.

Answer:

Solution:

The magnitude of the power difference is $Δ S = 20 μ V K^{- 1}$ .

$E = 20 (120 - 20) = 2000 μ V = 2 mV .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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