The resistivity of a material is dependent on the
temperature. Different materials do not exhibit the same dependence on
temperatures.
ρT = ρ0 [1 + α (T–T0)]
where ρT is the resistivity at a
temperature T and ρ0 is the same at a reference temperature T0.
α is called the temperature co-efficient
of resistivity, and from the dimension of α is (Temperature)–1.
kuch samajh nhi aa rha
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