Q the resistance of a nichrome wire at 0oc is 10 omega if, Ask an Expert

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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 R_t = R_o (1+ αt)

= 10 (1 + (0.004 × 100))

Rt = 14 Ω .

Result: The resistance increases with the temperature.

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