Please ans the problem 1.21 Share with your friends Share 0 Anshu Agrawal answered this Solution: Given: Resistance of conductor at T1 = 50°C R1 = 6 ohm Resistance of conductor at T2 = 100°C R2 = 7 ohm Find: The coefficient of resistance The resistance of the conductor at 0°C Solution: Rt = R₀ (1+ αΔT) Let R₀ be the resistance of the conductor at 0°C R1 = R₀ (1+ 50α) 6 = R₀ (1+ 50α) 6/(1+ 50α) = R₀ R2 = R₀ (1+ 100α) 7 = R₀ (1+ 100α) 7/(1+ 100α) = R₀ 6/(1+ 50α) = R₀ = 6 (1+ 100α) = 7 (1+ 50α) 6 + 600α = 7 + 350α 250 α = 1 α = 1/250 α = 0.004 6 = R₀ (1+ 50α) 6 = R₀ (1+ 50(0.004)) 6 = 1.2R₀ R₀ = 6/1.2 = 5 ohm The coefficient of resistance is 0.004/ °C and the resistance of the conductor at 0°C is 5 ohm. 0 View Full Answer