Why is copper wire not commonly used in potentiometers?

Thread starter harini_5
Start date Apr 27, 2008
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Copper Potentiometer

AI Thread Summary

Copper wire is not commonly used in potentiometers due to its low resistivity, which can lead to inaccurate readings. Additionally, copper experiences work-hardening, making it less suitable for applications requiring flexibility. The formation of copper oxide can also affect performance negatively. While these issues could be addressed, using resistance wire is a more straightforward solution. Overall, resistance wire offers better reliability and performance for potentiometer applications.

Apr 27, 2008

harini_5

I’ve learned that copper wire is not generally used in a potentiometer. Is there any specific reason for this?

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Apr 27, 2008

TVP45

Generally the big problems you would face in using copper are: (1) low resistivity; (2) work-hardening; and (3) the formation of copper oxide. All of these could be overcome, but it's so much easier to just use resistance wire.

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