Basics of Electricity

# Basics of Electricity Overview A foundation for every technician, student, and future circuit troubleshooter The Basics of Electricity series introduces the core ideas that make all electrical systems work. These lessons prepare students for DC circuits, AC theory, electronics, motors, transformers, and troubleshooting. Everything starts here: atoms, charge, voltage, current, resistance, power, and simple circuits. If you are new to electricity or want a solid refresher before moving into more advanced topics, begin with Section 0. ## How to Use This Folder Each section builds toward understanding how real electrical systems behave. Move in sequence unless you already have experience. - Read the short lessons - Study the examples and callouts - Draw diagrams or use a simulator for visuals - Practice measuring voltage, current, and resistance whenever possible > [!tip] Learning Tip > Even simple circuits teach powerful ideas. Spend time with the basics and the rest of electricity becomes much easier. # Section Map and Quick Links ## **0. Introduction to Electricity** - [[0.1 Understanding Electricity and the Pioneers Behind It]] - [[0.2 Safety in Electrical Work]] ## **1. The Atom and Atomic Structure** - [[1.1 Basic Atomic Theory]] - [[1.2 Electron Movement and Charge]] ## **2. Electrostatics and Coulomb’s Law** - [[2.1 Electrostatic Force and the Law of Charges]] - [[2.2 Electrostatic Fields and Attraction (Coulomb’s Law)]] ## **3. Potential Difference and Voltage** - [[3.1 What is Potential Difference]] - [[3.2 Units and Measurement of Voltage]] ## **4. Current and Electron Flow** - [[4.1 Free Electrons and Current Flow]] - [[4.2 Electron Behavior in Materials]] ## **5. Types of Materials** - [[5.1 Conductors and Insulators]] - [[5.2 Semiconductors]] ## **6. Resistance and Factors Affecting It** - [[6.1 What is Resistance]] - [[6.2 Factors Affecting Resistance]] ## **7. The Electric Circuit and Ohm’s Law** - [[7.1 Understanding a Simple Circuit]] - [[7.2 Ohm’s Law]] ## **8. Power in Electrical Systems** - [[8.1 What is Electrical Power]] - [[8.2 Power Calculations and Practical Uses]] ## **9. Effects of Electric Current** - [[9.1 Magnetic, Thermal, and Chemical Effects]] - [[9.2 Introduction to Electromagnetism]] ## **10. Practical Application** - [[10.1 Building Simple Circuits]] ## Where to Begin Start with Section 0 if you are new to electricity. If you already understand atoms, charge, and safety basics, feel free to jump ahead. Each lesson builds a skill you will rely on throughout your electrical training. ---