circuit.pdf

{$$P_l=RI^2$$}

{$$P=UI\cos(\varphi)$$}

{$$P_l=R\left(\frac{P}{U\cos(\varphi)}\right)^2$$}

{$$\rho=\frac{P_{charge}}{P_{fournie}}$$}

{$$\rho_{AC}=\frac{R_{c} I_{{s}_{eff}}^{2}}{U_{{e}_{eff}} I_{{e}_{eff}} \cos{\varphi}}$$}

{$$\rho_{DC}=\frac{R_{c} I_{s}^{2}}{U_{e} I_{e}}$$}