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U=230V
I=11A
R=?
230=11R
R=20,91
I=11A
U=220V(lub230V)
R=?
R=U/I
R=220V/11A
R=20Ω
I = 11A
U = 220V //Zeby wynik wyszedł calkowity
szukane: R = ?
R = U/I
R = 20 Ohm
odp. Opór wynosi 20 Ohm