In today s world, electricity is something that we all take for granted. So, before we get started, it is worth thinking about what electricity means to you and, more importantly, how it affects your life.
Think, for a moment, about where and how electricity is used in your home, car, workplace or college. You will quickly conclude that electricity is a means of providing heat, light, motion and sound. You should also conclude that electricity is invisible we only know that it is there by looking at what it does!
Now let us turn to the world of aircraft and flight. Although it may not be obvious at first sight, it is fair to say that an aircraft just could not fly without electricity. Not only is electricity used to provide a means of ignition for the engines, but it also supplies the lighting and instruments within an aircraft as well as the navigational aids and radio equipment essential for safe flight in a modern aircraft. Electricity is used to heat windows, pump fuel, operate brakes, open and shut valves, and to control numerous other systems within the aircraft. In fact, aircraft that use modern fly-by-wire controls could not even get off the ground without the electrical systems and supplies that make them work!
In this chapter we will explain electricity in terms of electric charge, current, voltage and resistance. We will begin by introducing you...
TABLE OF CONTENTS 
