Is it true that the alloys like manganin or constantan are used in making standard resistance coils?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

True

False

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The above statement is True.
Both Manganin and Constantan are alloys. The resistivity of manganin is

44 \times 1 0^{- 6} Ωm

and the constantan is

49 \times 1 0^{- 6}

Ω m

Therefore, their resistivity is generally higher than that of its constituent metals. As a result, they do not oxidise or burn readily at high temperatures. So we use them in making standard resistance coils.

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th