Electricity for Beginners

By Trevor Wrightson

This book was written for High School students, Electrical Apprentices and anyone interested in Electrical Theory. Diagrams throughout the book provide a very simple understanding of how Electricity works.

• Language: English
• Publisher: Balboa Press AU
• Release date: Dec 13, 2020
• ISBN: 9781504323819

Trevor Wrightson

Trevor Wrightson worked in Power Stations for over 40 years, 30 of those years as an Electrical Supervisor. After retirement from the Electricity Commission of New South Wales he taught Electrical Theory to Electrical Apprentices and Tradesmen for a further five years.

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Copyright © 2021 Trevor Wrightson.

Written by Trevor Wrightson

Drawings by Trevor Wrightson and Ken Driver

Edited by Mrs Sue Cox

Image Sources:

Front cover image: istockphoto.com

Figure 3 – zapno.com.au, used with permission

Figures 35, 36 and 50 – istockphoto.com

All rights reserved. No part of this book may be used or reproduced by any means, graphic, electronic, or mechanical,

including photocopying, recording, taping or by any information storage retrieval system without the written

permission of the author except in the case of brief quotations embodied in critical articles and reviews.

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not necessarily reflect the views of the publisher, and the publisher hereby disclaims any responsibility for them.

ISBN: 978-1-5043-2380-2 (sc)

ISBN: 978-1-5043-2381-9 (e)

Balboa Press rev. date: 03/02/2021

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Electricity For Beginners

This book has been written for High School students, Electrical

Apprentices and those people interested in Electrical Theory.

It contains over fifty diagrams and is designed to give a very simple understanding of Electricity.

It will answer all those questions that you have been asking yourself if you have not come

into contact with the people who have this knowledge, or you are too embarrassed to ask.

Contents

Chapter 1 What Is Electricity?

INTRODUCTION

Chapter 2 Atoms

2.1 STRUCTURE OF AN ATOM

Chapter 3 Types Of Electricity

3.1 Alternating Current (A.C.)

3.2 Direct Current (D.C.)

3.3 Static Electricity

Chapter 4 Electrical Terms And Definitions

4.1 CONDUCTORS

4.2 INSULATORS

4.3 CIRCUITS

4.4 VOLTAGE

4.5 VOLTAGE DROP

4.6 RESISTANCE

4.7 OHMS LAW

4.8 WATTS

Chapter 5 Magnets

5.1 TYPES OF MAGNETS

5.2 BAR MAGNET

5.3 ELECTROMAGNETS

5.4 EDDY CURRENTS

Chapter 6 A.C. Induction

6.2 GENERATION

6.1 CONVENTIONAL CURRENT

Chapter 7 Alternator

7.1 A.C. GENERATION

Chapter 8 Three Phase Alternators

8.1 THREE PHASE

Chapter 9 Transformers

9.1 TRANSFORMER REACTION

Chapter 10 Direct Current (D.C.)

10.1 D.C. IS PRODUCED IN TWO WAYS

10.2 ADVANTAGES OF D.C.

10.3 DISADVANTAGES OF D.C.

10.4 D.C. GENERATOR

10.5 DRY CELL BATTERIES

10.6 WET CELL BATTERY

10.7 ALKALINE BATTERIES

10.8 SUMMARY

Chapter 11 Series And Parallel Circuits

11.1 ELECTRICAL CIRCUITS AND APPARATUS

11.2 PARALLEL CIRCUITS

11.3 SERIES CIRCUITS

11.4 BATTERIES

11.5 SUMMARY

Chapter 12 Fuses And Circuit Breakers

12.1 FUSES

12.2 HIGH RUPTURING CAPACITY FUSES (HRC)

12.3 CIRCUIT BREAKERS

Chapter 13 Why Earthing is so important

13. 1 Safety

Chapter 14 Looking To The Future

14.1 Overview

Chapter 15 Practical Electrical Exercises

15.1 EXERCISE 1 – Create a Simple Circuit

15.2 EXERCISE 2 – 6 Volt Lights Connected in Parallel

15.3 EXERCISE 3 – Lights Connected in Series

Chapter One

WHAT IS ELECTRICITY?

INTRODUCTION

1.1   Welcome to the fascinating world of Electricity. Have you ever imagined living in a world without Electricity? No Electrical lighting or heating, no microwave oven or Electrical stove, no television, no refrigeration or computer. The list is endless, it