057
De stroom I is:
a 2 A
b 1 A
c
0.5 A
d 0.25 A
┘
U=I*R
Utt = 1.5 V
Rt = RI van ! ohm met 2 ohm in serie = 3
I + U / R
I = 1.5 / 3 = 0.5 A