The impedance Z in an AC circuit is given by
1
\({\rm{Z}} = \sqrt {{{\rm{R}}^2} + {{\left( {{{\rm{X}}_{\rm{C}}} - {{\rm{X}}_{\rm{L}}}} \right)}^2}} \)
2
\({\rm{Z}} = \sqrt {{{\rm{R}}^2} + 3{{\left( {{{\rm{X}}_{\rm{L}}} - {{\rm{X}}_{\rm{C}}}} \right)}^2}} \)
3
\({\rm{Z}} = \sqrt {{{\rm{R}}^2} - {{\left( {{{\rm{X}}_{\rm{C}}} + {{\rm{X}}_{\rm{L}}}} \right)}^2}} \)
4
\({\rm{Z}} = \sqrt {{{\rm{R}}^2} + 2{{\left( {{{\rm{X}}_{\rm{L}}} - {{\rm{X}}_{\rm{C}}}} \right)}^2}} \)