Question

va rog frumos ajutatima e urgent​

Answer 1

E=U+u=>U=E-u=60-20=40 V

u=I*r=>I=u/r=20/0,5=40 A

U=RI=>R=U/I=40/40=1 Ω

Q=I*Δt=>Δt=Q/I=10/40=0,25 s

u=Lint/Q=>Lint=u*Q=20*10=200 J

U=Lext/Q=>Lext=U*Q=40*10=400 J