List of Lessons | Subjects

Understanding Electricity

by Ron Kurtus (updated 16 March 2023)

Electricity is a branch of Physics that concerns the properties and movement of electrically charged particles. When the charged particles are on the surface of a material, it is called Static Electricity. When the charges move through wires, it can be AC or DC Electricity.

Electricity and Magnetism are interrelated. Movement of electrical charges creates magnetic fields, while changes in magnetic fields can create electricity.

Knowledge of electricty is important in learning how electrical devices work.

The purpose of these free online lessons is to give you a start at improving your scientific knowledge about electricity that will help you become a champion in the field.


Electricity basics

Basics of Electricity

Electrical Charges

Static Electricity

Static Electricity Resources

Basics of Static Electricity

Causes of Static Electricity

Causes of Static Electricity

Materials that Cause Static Electricity


Static Electricity Forces

Detection of Static Electricity


Generating Static Electricity

Electrostatic Induction

Sparks and shocks

Static Electricity Sparks

Static Electricity and Lightning

Lightning Protection System

Static Electricity Shocks


Controlling Static Electricity

Preventing Static Electricity Shocks

Controlling Static Cling

Controlling Flyaway Hair


Uses for Static Electricity

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Electrical Circuits

Generating Electrical Current

Electrical Power

Storage of Electrical Power

Basic Units of Electrical Circuits

Ohm's Law for Simple Electrical Circuits

DC Electricity

Direct Current (DC) Electricity

Direct Current (DC) Electrical Circuits

Ohm's Law for Electrical Circuits

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AC Electricity

Alternating Current (AC) Electricity

Alternating Current (AC) Transformers

Background of Worldwide AC Voltages and Frequencies

List of Worldwide AC Voltages and Frequencies

AC Home Wiring

Electrical Power

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Moving Electrical Charges Create Magnetic Field

Magnetism and Lorentz Force

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Basics of Electromagnetism



Generating Electrical Current

Electromagnetic Devices and Inventions

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Also see

Physics Resources



Experiments and Science Fair Projects

Interactive Graded Tests


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