From the diagram above, if the potential difference across the resistor, capacitor and inductor are 60V, 120V and 30V respectively, the effective potential difference is
VL=60 V ,VC = 120 V , VR =30V
;V = ? ; V2 = VR2 + VL - VC2 = V2 = 302 + 60−1202 = V2 = 900 + 3600 = V2 = 4500 = V = √4500 = 67V
