The manganin used in standard electrical resistance contains
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Manganin foil and wire is used in the manufacture of resistors, particularly ammeter shunts, because of its virtually zero temperature coefficient of resistance value and long term stability. Several Manganin resistors served as the legal standard for the ohm in the United States from 1901 to 1990.
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It contain manganin. foil it is because of its stability and higher resistance value
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