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1. 220:2=110oma
2.
50=x*10/4
50*4/10=x
x=20v
I = 2A
R = U / I
R = 220V / 2A = 110om
2) R = 50om
I = 0,4A
R = U / I --> U = RI
U = 50om * 0,4A = 20V
U=220V
I=2A
Szukane:
R=?
Rozwiązanie:
R=U/I
R=220V/2A
R=110 om
2,
Dane:
R=50om
I=0,4A
Szukane:
U=?
Rozwiązanie:
R=U/I |*I
U=R*I
U=50om*0,4A=20V