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gadyev
@gadyev
July 2022
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ПОМОГИТЕ С РЕШЕНИЕМ!
Сопротивление стального проводника при температуре t1=20 C.
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fatt52
Verified answer
T1=20 R1=100 Ом R2=78 Ом α=0,006 K^-1 t2=?
===
R1=Ro*(1+α*t1)
R2=Ro*(1+α*t2)
t2=((1+α*t1)*R2/R1-1)/α=((1+0.006*20)*78/100-1)/0.006=-20°C (T2=273-20=253 K)
==================================================
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Verified answer
T1=20 R1=100 Ом R2=78 Ом α=0,006 K^-1 t2=?===
R1=Ro*(1+α*t1)
R2=Ro*(1+α*t2)
t2=((1+α*t1)*R2/R1-1)/α=((1+0.006*20)*78/100-1)/0.006=-20°C (T2=273-20=253 K)
==================================================