Question

Ajutor...va rog......​

Answer 1

I=600 mA=0,6 A

U=R*I=>R=U/I=1,2/0,6=2 Ω

I=E/(R+r)=>IR+Ir=E=>r=(E-IR)/I=(1,5-2*0,6)/0,6=0,3/0,6=0,5 Ω

Isc=E/r=1,5/0,5=3 A