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CBSE - XII Science - Physics - Current Electricity

1. What is a Thermo couple? 2. What is Thomson effect?

Asked by Swarnalakshmi Murugan 2nd August 2012, 6:20 PM
Answered by Expert


A thermocouple consists of two conductors of different materials (usually metal alloys) that produce a voltage in the vicinity of the point where the two conductors are in contact. The voltage produced is dependent on, but not necessarily proportional to, the difference of temperature of the junction to other parts of those conductors.
When a current flows through an unequally heated metal, there is an absorption or evolution of heat in the body of the metal. This is Thomson effect.
Answered by Expert 3rd August 2012, 10:37 AM

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