Q2 of 805 Page 1

Define temperature coefficient of resistivity.

The resistivity of materials depend on the temperature at which they are operated upon. Different materials exhibit different dependences on temperatures. Over a limited range of small temperatures, the resistivity of a metallic conductor is approximately given by,


RT = R0 [1 + α(T– T0)]


,where RT is the resistivity at a temperature T and R0 is the same at a reference temperature T0, α is called the temperature co-efficient of resistivity.


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