A coil has a resistance of 20 Ω at 20 °C, with α₂₀ = 0.004 /°C. Its resistance at 80 °C is:A26.4 ΩB20.24 ΩC4.8 ΩD24.8 Ω শেয়ার ভুল রিপোর্টEE-1017