Why are constantan and manganin used for making standard resistances?
Text Solution
Verified by Experts
The allows (i.e., manganin or constantan) are used for making the standard resistance coils as they have low value of temperature coefficient of resistance and have high value of resistivity.
Topper's Solved these Questions
CURRENT ELECTRICITY
PRADEEP|Exercise Conceptual Problems|3 Videos
CURRENT ELECTRICITY
PRADEEP|Exercise Very short Q/A|7 Videos
COMMUNICATION SYSTEMS
PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos
DUAL NATURE OF RADIATION AND MATTER
PRADEEP|Exercise Exercise|191 Videos
Similar Questions
Explore conceptually related problems
(i) Define the term drift velocity . (ii) On the basis of electron drift , derive an expression for resistivity of a conductor in terms of number density of free electrons and relaxation time. On what factors does resistivity of a coductor depend ? (iii) Why alloys like constantan and manganin are used for making standard restores ?
The alloys constantan and manganin are used to make standard resistance due to they have
Why are alloys used for making standard resistance coils?
What are the materials generally used for making standard resistance? Give their compositions .
Constantan wire is used in making standard resistances, because its :–
PRADEEP-CURRENT ELECTRICITY-Problems for Practice (B)
