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harini_5
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I’ve learned that copper wire is not generally used in a potentiometer. Is there any specific reason for this?
Copper is used in potentiometers as a conductor to carry electrical current and as a material for the resistive element.
Copper's high electrical conductivity and low resistance make it an ideal material for use in potentiometers, which helps to ensure accurate readings.
Yes, while copper is commonly used, other materials such as carbon, metal alloys, and conductive plastics can also be used as the resistive element in potentiometers.
Copper oxide can form on the surface of copper, which can increase the resistance and decrease the accuracy of a potentiometer. To prevent this, some potentiometers use a layer of nickel or gold plating on the copper to prevent oxidation.
In linear potentiometers, the resistance changes in a linear manner as the wiper moves along the resistive element. In logarithmic potentiometers, the resistance changes exponentially as the wiper moves, making them better suited for audio and volume control applications.