NEET Physics Resistivity and Conductivity Assertion Reason Question
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. 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.
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 true but R is false.
Correct Answer
Detailed Explanation
Both statements are true, and the reason correctly explains why these alloys are used for resistance coils.
Found an issue with this question?
Related Questions
More from
Consider a conductor of length l and cross-sectional area A. If the conductor is cut lengthwise into two identical slabs, each having a cross-sectiona...
Consider a diagram showing a rectangular slab of length \( l \) and area of cross-section \( A \). If the resistance \( R \) of the slab is given by t...
A platinum resistance thermometer has a wire at the ice point with a resistance of 5 Ω and at the steam point with a resistance of 5.23 Ω. If the resi...