A wire has resistance 15 ohm at 10°c and 18 ohm at 400°c finally temperature coefficent of its resistance ?
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It is same as linear expantion
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α = ΔR / (R ΔT)
= (18 - 15) Ω / [15 Ω × (400 - 10) °C[]
= 5.128 × 10⁻⁴ /°C
Coefficient of its resistance (α) is 5.128 × 10⁻⁴ /°C
= (18 - 15) Ω / [15 Ω × (400 - 10) °C[]
= 5.128 × 10⁻⁴ /°C
Coefficient of its resistance (α) is 5.128 × 10⁻⁴ /°C
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