Part b) An electrical load of unknown characteristics, is connected to an AC power supply. The voltage and (lagging) current supplied to it are recorded and are shown in Figure 1.

(i) Which basic circuit components, connected in series, could you use to represent this load in an equivalent circuit? Explain your choices and using the data from the graph, calculate their values. (25%) (ii)The frequency of the supply is slowly increased up to double the value shown in the graph, but the measured voltage amplitude remains the same. Create a graph, showing how I - the magnitude of the phasor current drawn by the load, and eve - the phase angle between the current and voltage, vary with the increasing frequency.