Congratulations on your beginning of your journey to understanding electricity. My name is Grant van Brunt and I am very excited about putting on these courses because it has covering material that I had to understand in my career and a lot of it, we're kind of in the dark areas that took a while for me to research that you will have in front of you, before you have to do any of the research. I've spent quite a bit of time developing these courses you will find each slide very crisp and clean, and you'll enjoy your journey through understanding electricity. I have spent over 35 years in the industry, I started out with a company called Ontario hydro, which was the largest supplier and wholesale of electricity in Ontario, which is one of the largest provinces in Canada. This course is entitled basic electrical theory and we start out by looking at exclusively DC circuits, which are direct current circuits.

This course is the fundamental building block of the other courses that will follow. The lessons learned in this course, are very simple, but you will run across them again and again and again. As your journey progresses through the understanding of electrical theory. We start out the course with a basic understanding of what the nature of electricity is actually starting out with static electricity and then moving on to understanding how static electricity will move into current flow. We will look at very simple electrical circuits and we will understand what electron flow is and what current flow is and the difference between the two of them. We will then move on to understanding the very fundamental equation that will be associated with electrical theory and that is ohms law.

This is the very basic equation that is used over and over and over again in basic electrical theory. Once we know and understand what ohms law is and the relationship between current resistance and voltage, we will then look on to what is electrical power and how do we calculate electrical power. Once we understand these equations, we then will look at them in a little bit more in detail by studying the various components of the equation starting with resistors. We will then place these resistors in various parallel and series circuits and study what is meant by a series and parallel circuits. And then we will bring in some tools for analyzing more complex circuits using things like kerchief Voltage Law and current shops, current law, but we will thoroughly understand what these laws mean and what they can do to ease our analysis of complex equations. Moving on to more complex circuits, we will develop a way and do some practicing on reducing those complex circuits to very simple circuits that we can analyze.

We now have the capability or we will have the capability to move on to circuit theorems and in doing so, we We will develop what is known as the DC power sources and we will look at voltage sources and current sources and what we mean by them. We will look at complex theorems that will help us analyze more complex circuits such as savings theorem. Next we move on to electrical fields and capacitance and the characteristics associated with electrical capacitors. From there we will move on to inductors but before jumping right into inductors, we have to have an understanding of the basics of magnetism. So, we start out looking at some of the basics of electrical magnetism. The various terms of magnetism are going to be defined, such as magnetic flux and flux density This magnetic flux density will then be related to current flowing in a circuit that will be associated with that magnetic flux.

And we will also look at how the magnetic flux is influenced by the various magnetic materials that coils may be wrapped around. This will provide a lead in to the study of electromagnetic induction and Faraday's equations associated with electromagnetic induction. With this background in magnetism, the student now can move on to the study of the third and last element or passive element in this chapter of the course, which is inductance. And just like capacitors, we'll study the various characteristics of inductors and how they are affected by current and voltage in that circuit. And lastly, we will look at some of the practical considerations of inductors in an electric circuit. And there's various things that we have to take into consideration in the real world.

And these will be looked at at the culmination of this chapter. That brings us to the end of the chapter on basic electrical theory, DC circuits