Welcome to Electrical Theory Fundamentals

This course is designed for beginners and intermediate learners who want to understand the principles of electrical theory.
Whether you're an aspiring electrician, an engineering student, or simply curious about how electrical systems work, this guide will provide you with a strong foundation. Please feel free to comment on any topic if you require further help with any of the discussed concepts.
Below, you’ll find a list of topics covered in this course. Click on any section to begin learning.

Topic 1 - Introduction to Electricity

Electricity is the movement of charged particles through a conductor. In this section, you’ll learn about atoms, electrons, conductors, and how electricity is generated.

  • What is Electricity?
  • Atoms, Electrons, and Charge
  • Conductors vs. Insulators
  • How Electricity is Generated

    • Click to Learn Topic

    Topic 2 - Voltage, Current, and Resistance

    Understanding voltage, current, and resistance is the key to working with electrical circuits. This section introduces Ohm’s Law (V = IR) and explains how series and parallel circuits work.

  • What are Voltage, Current, and Resistance?
  • Ohm’s Law (V = IR)
  • Series vs. Parallel Circuits

    • Click to Learn Topic

    Topic 3 - Alternating Current (AC) vs. Direct Current (DC)

    Electricity can flow in two ways: AC or DC.
    This section explains the differences, AC waveforms, frequency, and the applications of each type.

  • Differences Between AC & DC
  • AC Waveforms & Frequency
  • Single-phase & Three-phase Power
  • Rectification (Converting AC to DC)

    • Coming Soon

    Topic 4 - Electrical Power & Energy

    Power and energy drive all electrical applications.
    Here, you’ll learn about power calculation (P = VI), AC vs. DC power, energy efficiency, and power factor.

  • Power (P = VI) and Work Done
  • Power in AC vs. DC Circuits
  • Electrical Energy & Efficiency
  • Power Factor & Its Importance

    • Coming Soon

    Topic 5 - Electromotive Force (EMF) & Kirchhoff’s Laws

    Understand how electrical potential (EMF) is generated and how Kirchhoff’s Laws help analyze circuit behavior.

  • Understanding EMF & Internal Resistance
  • Kirchhoff’s Voltage Law
  • Kirchhoff’s Current Law

    • Coming Soon

    Topic 6 - Capacitance & Inductance

    Capacitors and inductors store and release energy differently. This section explores their functions, applications, and how they affect circuits.

  • What is Capacitance?
  • What is Inductance?
  • Time Constants in RC & RL Circuits
  • Applications of Capacitors & Inductors

    • Coming Soon

    Topic 7 - Transformers & Electromagnetic Induction

    Electricity can flow in two ways: AC or DC.
    This section explains the differences, AC waveforms, frequency, and the applications of each type.

  • Faraday’s Law of Induction
  • How Transformers Work
  • Step-Up vs. Step-Down Transformers
  • Transformer Efficiency & Losses

    • Coming Soon

    Topic 8 - Electrical Motors & Generators

    Motors convert electrical energy into mechanical energy, while generators do the opposite. Explore DC and AC motors, efficiency, and basic generator principles.

  • DC Motors & How They Work
  • AC Motors (Induction & Synchronous)
  • Motor Efficiency & Torque
  • Basic Generator Principles

    • Coming Soon

    Topic 9 - Power Factor & Reactive Power

    Power factor affects the efficiency of electrical systems. Learn about active, reactive, and apparent power, and how to improve power factor.

  • Understanding Active, Reactive, and Apparent Power
  • What is Power Factor?
  • Power Factor Correction

    • Coming Soon