Why do we use manganine wire in potentiometer?
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Answered by
11
We know that potentiometer is used to measure potential difference a wire made of manganin has very low temperature coefficient residence.
We also know that the voltage drop V across the potentiometer is directly proportional to the length L of the wire.
Hence resistance may reduce the potential drop if copper or any other material with high coefficient of resistance is used to make potentiometer wire
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We also know that the voltage drop V across the potentiometer is directly proportional to the length L of the wire.
Hence resistance may reduce the potential drop if copper or any other material with high coefficient of resistance is used to make potentiometer wire
if you like my answer.........
please mark my answer as brainliest answer.
Answered by
8
We use maganin wire in potentiometer because they posses high specific resistance and low temperature coefficient.
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