Q) Which of the following material has nearly zero temperature co-efficient of resistance ?A) copperB) carbonC) porcelainD) manganin.Ans:AIn manganin

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Q) Which of the following material has nearly zero temperature co-efficient of resistance ?
A) copper
B) carbon
C) porcelain
D) manganin.

Ans:A
In manganin, there is no change in resistance with the change in temperature. Hence, it has nearly zero temperature co-efficient of resistance.

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