The resistance of a conductor at 20°C is 5 ohms. If its temperature coefficient of resistance is 0.004/K, at what temperature will its resistance be 6 ohms?
Q1. The resistance of a conductor at 20°C is 5 ohms. If its temperature coefficient of resistance is 0.004/K, at what temperature will its resistance be 6 ohms?
Answer: 70°C
Explanation: R = R0(1 + αΔT), 6 = 5(1 + 0.004*ΔT), ΔT = 50, T = 20 + 50 = 70°C.