Question:medium

Two resistances at 0^∘C with temperature coefficient of resistance alpha₁ and alpha₂ joined in series act as a single resistance in a circuit. The temperature coefficient of their single resistance will be:

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For series combination of equal resistances: alphaₑq=average of individual α
Updated On: Mar 19, 2026
  • \(\alpha_1+\alpha_2\)
  • \(\dfrac{\alpha_1\alpha_2}{\alpha_1+\alpha_2}\)
  • \(\dfrac{\alpha_1-\alpha_2}{2}\)
  • (alpha₁+alpha₂)/(2)
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The Correct Option is D

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