Zl=20 Zc=100tan\varphi an*tan\varphi mb =1 \Leftrightarrow (Zl*Zc)/R^2 =1 \Rightarrow R=20\sqrt{5} P=(U^2R)/(R^2+(Zl-Zc)^2)=500\sqrt{5}/21
Zl=20 Zc=100tanphi an*tanphi mb =1 suy ra Zl*Zc)/R^2 =1 suy ra R=20can{5} P=(U^2R)/(R^2+(Zl-Zc)^2)=500can{5}/21