Odpowiedź:
d=0,2mm=2⁻⁴m
R=0,5Ω
ς=2,41*10⁻⁸Ωm
R=ς*l/s
Rs=ςl
i=Rs/ς
s=πd²/4
s=π*(2⁻⁴m)²/4
s=3,14*10⁻⁸m²
l=2Ω*3,14m²*10⁻⁸/2,41*10⁻⁸Ωm
l=2,6m
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Odpowiedź:
d=0,2mm=2⁻⁴m
R=0,5Ω
ς=2,41*10⁻⁸Ωm
R=ς*l/s
Rs=ςl
i=Rs/ς
s=πd²/4
s=π*(2⁻⁴m)²/4
s=3,14*10⁻⁸m²
l=2Ω*3,14m²*10⁻⁸/2,41*10⁻⁸Ωm
l=2,6m