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Varianta 9​


Varianta 9 class=

Răspuns :

a) Deoarece K = deschis => R2 devine nul,deci

I = E/R1+r = 24/10.5 = 2.28A

b) Rac = 0.6*10 = 6 ohm

Re = Rac*R1/Rac+R1 = 3.75 ohm

c) R1 = ρ*l/S => S= ρ*l/R1 = 3.4*10^8