Current Electricity Charging Discharging Of Capacitors Question 239
Question: Constantan wire is used in making standard resistances because its
[MP PET 1999]
Options:
A) Specific resistance is low
B) Density is high
C) Temperature coefficient of resistance is negligible
D) Melting point is high
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Answer:
Correct Answer: C
Solution:
Due to the negligible temperature co-efficient of resistance of constantan wire, there is no change in it’s resistance value with change in temperature.
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