Two resistances at 0° C with temperature coefficient of resistance \alpha_1 and \alpha_2 joined in series act as a single resistance in a circuit. The temperature coefficient of their single resistance will be

\frac{\alpha_1\alpha_2}{\alpha_1+\alpha_2}

BITSAT 2016 Paper

Section: Physics

Question : 34 of 150

Marks: +1, -0

Two resistances at 0° C with temperature coefficient of resistance α1 and α2 joined in series act as a single resistance in a circuit. The temperature coefficient of their single resistance will be

α1+α2
α1α2
α1+α2
α1−α2
2
α1+α2
2

Validate

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