For maximum power transfer between two cascaded sections of an electrical network, the relationship between the output impedance $Z_{1}$ of the first section to the input impedance $Z_{2}$ of the second section is
- $Z_{2} = Z_{1}$
- $Z_{2} = -Z_{1}$
- $Z_{2} = Z_{1}^{\ast}$
- $Z_{2} = -Z_{1}^{\ast}$