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Question

Which among the following alloys is used in making instruments for electrical measurements?

A
Stainless steel
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B
Manganin
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C
Spiegeleisen
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D
Duralumin
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Solution

The correct option is B Manganin
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. So it is used in making electrical instruments.

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