ABSTRACT
This chapter explores current and power in AC circuits, the use of vectors for representing voltage, current, and their relationships in AC electricity, and differences between DC and AC circuits. It explains three types of power in AC and the relationship between them, the equivalent of inductors and capacitors in series and in parallel with each other, and phase difference. The chapter details reactance, inductive and capacitive reactance, and shows how to measure them, when inductors and capacitors are put in an AC circuit, what happens, and why there will be phase difference between current and voltage. It presents problems involving resistors, inductors, and capacitors connected to AC electricity and problems when resistive loads, inductive loads, and capacitive loads are combined together, either in series or in parallel, in AC circuits. The chapter also details voltage dividers for AC circuits and resonance and its effects in series and parallel RLC circuits.
