Derivations Derive the shift between current through and voltage across a Capacitor and its reactance in an AC circuit. Represent the shift in a phasor diagram; Derive the shift between current through and voltage across an Inductor in and its reactance in an AC circuit; Represent the shift in a phasor diagram; _ Derive the shift between current through and voltage across a Resistor in an AC circuit; represent the shift in a phasor diagram; Use phasor diagrams to derive the impedance of a series RIC Circuit, it power factor and resonance frequency