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Two wires of resistance R1 and …

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Two wires of resistance R1 and R2 have temperature coefficient of resistance a1 and a1 respectively. These are joined in series. The effective temperature Coefficient of resistance is

    • Posted by Nisha Choudhary 6 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    ∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

    ➡️Rt1=R1(1+α1t)Rt1=R1(1+α1t)  ➡️ Rt2=R2(1+α2t) ➡️ Req.=Rt1+Rt2 ➡️ Req=R1+R2+(R1α1+R2α2)t ➡️ Req=(R1+R2){1+(R1α1+R2α2/R1+R2).t} ➡️ α(eff) =R1α1+R2α2/R1+R2

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