PhysicsHard226×since 2002Q6525Two conductors have the same resistances at 0∘C0^{\circ} \mathrm{C}0∘C but their temperature coefficients of resistance are α1\alpha_1α1 and α2\alpha_2α2. The respective temperature coefficients for their series and parallel combinations are :Aα1+α2,α1α2α1+α2\alpha_1+\alpha_2, \frac{\alpha_1 \alpha_2}{\alpha_1+\alpha_2}α1+α2,α1+α2α1α2Bα1+α22,α1+α22\frac{\alpha_1+\alpha_2}{2}, \frac{\alpha_1+\alpha_2}{2}2α1+α2,2α1+α2Cα1+α2,α1+α22\alpha_1+\alpha_2, \frac{\alpha_1+\alpha_2}{2}α1+α2,2α1+α2Dα1+α22,α1+α2\frac{\alpha_1+\alpha_2}{2}, \alpha_1+\alpha_22α1+α2,α1+α2Check answerSkip