How does the resistivity of a conductor vary with temperature?
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It is found that the temperature dependence of resistivity of a metal is given by the relation
ρ = ρ 0[1+αt(T-T0)]
Where ρ and ρ0 are the resistivity at temperature T and T0 respectively and αtis called temperature coefficient of resistivity.
For Conductors. The value of αr is positive, showing that their resistivity increase with increase in temperature. For most metals the resistivity increases linearly with increase in temperature over a temperature range of about 500 k, above the room temperature.
ρ = ρ 0[1+αt(T-T0)]
Where ρ and ρ0 are the resistivity at temperature T and T0 respectively and αtis called temperature coefficient of resistivity.
For Conductors. The value of αr is positive, showing that their resistivity increase with increase in temperature. For most metals the resistivity increases linearly with increase in temperature over a temperature range of about 500 k, above the room temperature.
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