The `IK.cellml <../components/IK.cellml>`_ defines `the equation of the potassium current <../components/IK.cellml/cellml_math>`_.
It instantiates the imported `gating kinetics component <../components/gating-variable.cellml/view>`_ for n gate, while the n gate rate is defined in `IK-gating-rates.cellml <../components/IK-gating-rates.cellml>`_.