In an AC circuit, the time lag between the source and the resistor voltages is most often reported as a phase difference, 0, between the source and the resistor.
4) The phase difference is determined by equating the ratio of time lag and period to phase difference and 27:
tlag=T/21Since the period of the voltage cycle is 1/f, this relation simplifies to:6ftlag=210=2πftlag
The AC voltage source can be represented by the function, V = Vo cos (2πft +