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Q. The resistance of a nichrome wire at 0oC is 10 Ω. If the temperature coefficient of resistance is 0.004/oC, find its resistance at boiling point of water. Comment on the result.
Resistance at boiling point of water Rt = Ro (1+ αt)
= 10 (1 + (0.004 × 100))
Rt = 14 Ω .
Result: The resistance increases with the temperature.
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