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Identify the material which is suitable for making standard resistors.

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in Physics – Class 12 by (135k points)
Identify the material which is suitable for making standard resistors.

(a) Silver

(b) Copper

(c) Constantan

(d) Germanium

This question was addressed to me in my homework.

This intriguing question originated from Current Electricity topic in chapter Current Electricity of Physics – Class 12

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Correct choice is (c) Constantan

For explanation: Alloys like constantan or manganin are used for making standard resistance coils due to their high resistivity values and very small temperature coefficient.

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