Newnes Circuit Calculations Pocket Book

11 A.c. circuits

11.1

Introduction

Chapter 6 looked at the nature of the a.c. waveform. This chapter

looks at the behaviour of the resistor, the inductor and the

capacitor, as individual components, and then in both series and

parallel combinations when driven by a.c. voltages.

The aim is to show that an a.c. circuit can involve the calculation of

up to 20 parameters. Generally, if four parameters are known, the

others can be deduced. The worked examples are chosen to show

how the formulas are used and transposed.

11.2

Resistor, R

The treatment of a purely resistive circuit shown in Figure 11.1 is

identical to the treatment given in Chapte