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d = 0,5mm
l = 2m
ρ = 0,055Ω mm²/m
Szukane:
R = ?
s = π • r2
s = π • 0,25²
s = 0,196mm²
R = ρ • l/s
R = 0,055Ω mm2/m • 2m/0,196mm²
R = 0,56Ω
Odp: Opór drutu wykonanego z wolfarmu wyniesie 0,56Ω
/ - kreska ulamkowa
śr.=0,5mm
l=2m
ρ=0,055Ωmm²/m
Sz]
R=?
R]
s=πr²=πx0,25²=0,196mm²
R=ρxl/s
0,055Ωmm²/mx2m/0,196mm²=0,56Ω