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Two conductors have the same resistances at \(0^{\circ} \mathrm{C}\) but their temperature coefficients of resistance ar…

Q1

Two conductors have the same resistances at \(0^{\circ} \mathrm{C}\) but their temperature coefficients of resistance are \({\alpha }_{1}\)and \({\alpha }_{2}\). The respective temperature coefficients for their series and parallel combinations are :

a

\(\frac{\alpha_1+\alpha_2}{2}, \frac{\alpha_1+\alpha_2}{2}\)

b

\(\alpha_1+\alpha_2, \frac{\alpha_1+\alpha_2}{2}\)

c

\(\alpha_1+\alpha_2, \frac{\alpha_1 \alpha_2}{\alpha_1+\alpha_2}\)

d

\(\frac{\alpha_1+\alpha_2}{2}, \alpha_1+\alpha_2\)

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