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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 3 - Current Electricity > Statement-1: The temperature dependence of resistance is usually given as R=R0(1+αΔT). The resistance of a wire changes from 100Ω→150Ω when its temperature is increased from 27^∘C to 227^∘C. This implies that α=2.5×10^−3/∘C. Statement 2: R=Ri(1+αΔT) is valid only when the change in the temperature ΔT is small and ΔR=(R−R0)

Statement-1: The temperature dependence of resistance is usually given as R=R0(1+αΔT). The resistance of a wire changes from 100Ω→150Ω when its temperature is increased from 27^∘C to 227^∘C. This implies that α=2.5×10^−3/∘C. Statement 2: R=Ri(1+αΔT) is valid only when the change in the temperature ΔT is small and ΔR=(R−R0)

In the below circuit the current in each resistance is