RPN Engineering Calculator™
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.
Using this calculator you can solve for a, the temperature coefficient of resistivity, R1, the resistance at temperature T1, R2, the resistance at temperature T2, or temperatures T1 or T2. Fill in the known values and calculate the unknown.
This function calculates the 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 11/05/2009