Question:
Nichrome or Manganin is widely used in wire bound standard resistors because of their
Nichrome or Manganin is widely used in wire bound standard resistors because of their
Updated On: Jun 15, 2022
- temperature independent resistivity
- very weakly temperature dependent resistivity
- strong dependence of resistivity with temperature
- mechanical strength
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The Correct Option is B
Solution and Explanation
Temperature coefficient of resistance of alloys have small values. Hence, resistivity of alloys depends weakly on temperature. Nichrome and manganin both are alloys and their resistivity depends weakly on temperature. Hence, they are used in wire bound standard resistors.
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Concepts Used:
Electromagnetic Induction
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
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Formula:
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where
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- N = number of turns in the coil
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Applications of Electromagnetic Induction
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- Magnetic Flow Meter