Assertion A: Alloys such as constantan and manganin are used in making standard resistance coils.
Reason R: Constantan and manganin have very small value of temperature coefficient of resistance.
In the light of the above statements, choose the correct answer from the options given below.

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Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is NOT the correct explanation of A

A is true but R is false.

A is false but R is true

answer is A.

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Detailed Solution

Both A and R are true and R is the correct explanation of A.

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