rT - Temperature Coefficient of Resistivity Calculator
Click the pale yellow 'rT' button to launch the Calculator. For a detailed description of the Multiple-Entry Calculators, click this link.
This
function calculates the change in resistance, due to temperature for various
materials. The relationship is: R2 = R1[1 + a
(T2 - T1)], where a
is the temperature coefficient of resistivity of the material at temperature T1.
Use the "Typical Values" table to find the coefficient of resistivity for several common materials at 20°c you can select a, or Double Click on the Material and the value will be selected. For copper or aluminum use the 20°c value for a, and REC will calculate the value of a at T1.
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Last updated 04/30/2008