Odpowiedzi

2010-04-14T19:56:57+02:00
Dane:
U=12
R1=10
R2=20
R3=20
I= ?

R= 1/R1 + 1/R2 + 1/R3
R= 1/10 + 1/20 + 1/20 = 2/20 + 1/20 + 1/20 = 4/20
20: 4 = 5
R=5

I= U/R
I= 12:5
I= 2,4 A