Understanding Basic Electricity Course
Master the electrical principles that power every building, machine, and system around you. From atomic theory and Ohm's Law to AC circuits, transformers, and safety procedures, this course gives you a rock-solid foundation in basic electricity. Whether you're entering the trades or sharpening your technical knowledge, you'll walk away with the skills to analyse circuits, use test equipment, and work safely with confidence.
What you will learn:
Understand voltage, current, resistance, and power using Ohm's Law and core formulas.
Analyse series, parallel, and combination DC circuits to find all voltages and currents.
Interpret AC waveforms and calculate RMS values, frequency, impedance, and power factor.
Explain electromagnetic induction and describe how transformers and motors operate.
Apply lockout/tagout procedures, earthing principles, and overcurrent protection on the job.
Read electrical schematics and wiring diagrams used across residential and commercial trades.
How you study in practice Understanding Basic Electricity Course
How you practise Understanding Basic Electricity Course
For businesses looking to train their team
With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.
Course content
8 Chapters • 35 LessonsDuration between 4 and 360 hours (you decide)
Chapter 1HideHide detailsSee detailsFoundations of Electrical Theory
Foundations of Electrical Theory
Lesson 1 • Atomic Structure and Electric Charge
Explains how protons, neutrons, and electrons create charge. Links atomic behaviour to the movement of electricity in materials.
Lesson 2 • Electrical Energy and Power
Introduces energy transfer and power dissipation in electrical systems. Prepares students to calculate wattage and energy consumption.
Lesson 3 • Conductors, Insulators, and Semiconductors
Classifies materials by their ability to carry current. Connects material properties to practical component selection.
Lesson 4 • Voltage, Current, and Resistance
Defines the three fundamental electrical quantities and their units. Provides the conceptual base for all circuit analysis that follows.
Chapter 2HideHide detailsSee detailsOhm's Law and Basic Calculations
Ohm's Law and Basic Calculations
Lesson 1 • Ohm's Law Defined
States the mathematical relationship V = IR and its derivations. Anchors all quantitative circuit work in the course.
Lesson 2 • Applying Ohm's Law to Simple Circuits
Walks through step-by-step problem-solving with single resistors. Builds calculation confidence before multi-component circuits.
Lesson 3 • Power Calculations Using Ohm's Law
Combines the power formula with Ohm's Law to derive P = I²R and P = V²/R. Enables full quantitative analysis of resistive circuits.
Lesson 4 • Practical Measurement and Verification
Introduces the multimeter as the primary tool for verifying Ohm's Law in real circuits. Connects theory to hands-on measurement practice.
Chapter 3HideHide detailsSee detailsDirect Current Circuit Fundamentals
Direct Current Circuit Fundamentals
Lesson 1 • Series-Parallel Combination Circuits
Teaches systematic reduction of complex networks to equivalent resistances. Prepares students for real-world circuits that mix both topologies.
Lesson 2 • Parallel Circuits
Covers voltage equality and current division in parallel configurations. Contrasts parallel behaviour with series rules established earlier.
Lesson 3 • Kirchhoff's Voltage and Current Laws
Introduces KVL and KCL as universal circuit analysis tools. Extends problem-solving capability beyond simple Ohm's Law applications.
Lesson 4 • DC Circuit Troubleshooting
Applies measurement skills to locate opens, shorts, and high-resistance faults. Bridges theoretical analysis with practical diagnostic procedures.
Lesson 5 • Series Circuits
Covers current continuity and voltage division in series configurations. Establishes rules that distinguish series from parallel behaviour.
Chapter 4HideHide detailsSee detailsMagnetism and Electromagnetism
Magnetism and Electromagnetism
Lesson 1 • Electromagnetism and Solenoids
Shows how current-carrying conductors produce magnetic fields. Introduces the solenoid as a controllable electromagnet.
Lesson 2 • Electromagnetic Induction
Explains Faraday's Law and Lenz's Law as the basis for voltage generation. Directly prepares students for AC generation concepts.
Lesson 3 • Magnetic Field Fundamentals
Describes magnetic poles, field lines, and flux density. Provides the physical foundation for understanding electromagnetic devices.
Lesson 4 • Transformers and Magnetic Coupling
Applies induction principles to transformer operation and turns-ratio calculations. Connects magnetism theory to power distribution practice.
Chapter 5HideHide detailsSee detailsAlternating Current Fundamentals
Alternating Current Fundamentals
Lesson 1 • RMS and Average Values
Derives RMS voltage and current as the DC-equivalent heating values. Explains why RMS is the standard measurement for AC systems.
Lesson 2 • AC vs. DC in Power Systems
Compares AC and DC for generation, transmission, and distribution. Explains the historical and technical reasons AC dominates utility power.
Lesson 3 • AC Waveform Characteristics
Defines the sinusoidal waveform and its key parameters. Establishes the vocabulary needed for all AC circuit analysis.
Lesson 4 • Resistive AC Circuits
Applies Ohm's Law to purely resistive AC loads. Confirms that voltage and current are in phase in resistive circuits.
Chapter 6HideHide detailsSee detailsCapacitance and Inductance in Circuits
Capacitance and Inductance in Circuits
Lesson 1 • Capacitor Operation and Capacitance
Explains charge storage on parallel plates and the factors affecting capacitance. Introduces the farad and practical capacitor types.
Lesson 2 • Capacitive Reactance and Phase
Derives Xc = 1/(2πfC) and explains the 90° current-leads-voltage phase shift. Connects capacitor behaviour to frequency-dependent circuit analysis.
Lesson 3 • RC and RL Time Constants
Calculates charge and decay times using τ = RC and τ = L/R. Applies time-constant concepts to switching and filtering applications.
Lesson 4 • Inductor Operation and Inductance
Explains magnetic energy storage in coils and the factors affecting inductance. Introduces the henry and practical inductor types.
Lesson 5 • Inductive Reactance and Phase
Derives XL = 2πfL and explains the 90° voltage-leads-current phase shift. Contrasts inductive behaviour with capacitive behaviour.
Chapter 7HideHide detailsSee detailsAC Circuit Analysis: Impedance and Power
AC Circuit Analysis: Impedance and Power
Lesson 1 • Series RLC Circuit Analysis
Applies impedance methods to series RLC circuits to find current and voltages. Introduces resonance as the condition where XL equals Xc.
Lesson 2 • Impedance and Phasor Representation
Combines R, XL, and Xc into complex impedance using phasor diagrams. Provides the unified analysis tool for all AC circuit types.
Lesson 3 • Parallel RLC Circuit Analysis
Extends impedance analysis to parallel RLC configurations using admittance. Contrasts parallel resonance behaviour with series resonance.
Lesson 4 • True Power, Reactive Power, and Power Factor
Defines the power triangle and calculates apparent, true, and reactive power. Explains why low power factor increases system losses.
Chapter 8HideHide detailsSee detailsElectrical Safety and Practical Applications
Electrical Safety and Practical Applications
Lesson 1 • Earthing, Bonding, and Overcurrent Protection
Explains protective earthing, equipotential bonding, and fuse/breaker operation. Connects safety hardware to the prevention of shock and fire.
Lesson 2 • Practical Circuit Construction and Testing
Guides students through building and testing circuits on a breadboard or terminal strip. Integrates all course theory into a hands-on capstone activity.
Lesson 3 • Safe Work Practices and Lockout Procedures
Covers de-energisation, lockout/tagout, and personal protective equipment. Translates safety regulations into actionable job-site procedures.
Lesson 4 • Reading Electrical Diagrams and Schematics
Introduces schematic symbols, wiring diagrams, and ladder diagrams. Enables students to interpret documentation used in all electrical trades.
Lesson 5 • Effects of Electricity on the Human Body
Quantifies the physiological effects of current at various levels. Establishes the urgency and rationale for all electrical safety practices.
Your valid completion certificate
This course is for you:
Aspiring electricians: need structured theory before entering an apprenticeship programme.
HVAC technicians: regularly work near electrical components without formal electrical training.
Facilities maintenance workers: manage building systems but lack circuit analysis skills.
Career changers: moving into the trades and building knowledge from the ground up.
DIY homeowners: want to understand their home's electrical system beyond basic tasks.
Engineering students: seeking practical reinforcement of classroom electrical theory concepts.
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