Page Slip of Induction Motor speed of field ‐ speed of rotor slip 00 Speed of field   Inductive Reactance Inductive Reactance of AC circuit X L π fL ohms where L inductance of circuit henries Inductance of an iron cored solenoid  .256T μ A henries L where T turns on coil μ magnetic permeablility of core A area of core square centimetres L length centimetres Capacitance Reactance Capacitance reactance of AC circuit X C π fC ohms where C capacitance farads Total reactance X       π fL ‐ ohms π fC Impedence Z  resistance reactance  R π fL ‐ ohms π fC