Question

Dau coroana si extrem de multe puncte !!!! Urgent
Plsss
R= r*50
I=0,5 A
u=E-5
Calculati:
R=?
E=?

Answer 1

Se da:
R=50r
I=0,5A
U=E-5
R=?ohm
E=?V

Formule:
I=E/(R+r)
I=E/(R+R/50)
I=E/(51R/50)
I=50E/51R
51R*I=50E
51U=50E
51(E-5)=50E
51E-255=50E
E=255V

I=50E/51R
R=50E/51I
R=255*50/51*0,5=500ohm