I had connected a 3.3k resistor to a 0.33µ Capacitor,other end of the capacitor is connected to common,now a 50Hz sinewave signal is connected to open end of resistor and common,and output is monitored between capacitor plus resistor junction and common.Waveforms of input and output were observed on a calibrated dual channel CRO,a phase shift of 3.34mS was observed I want to varify this result by calculation, can any member guide for a formula for this.