It is possible to express this as a formula to calculate the reactance at a particular frequency. L is the inductance gradient of the rails in uhm i is the current through armature in amps. Evaluating A Switching Regulator Inductor Current Inductor And The Effects Of Inductance On An Inductor Magnetics Core Loss Calculation F is the force in newtons l prime is the inductance gradient of the rails in henriesmeter hm and i is the current. Inductance gradient calculator . The reactance increases linearly with frequency. Inductance gradient variation with time and armature sliding along the rails asghar keshtkar shahab mozaffari and ahmad keshtkar abstractthe inductance gradient is one of the important parameters on the design and evaluation of railgun performance. These are related by the following equation 1 where. F 05 l i2 where. Acceleration