Unravelling the Mystery of Electricity

Tim Turner • January 11, 2024

Unraveling the Mysteries of Electricity: Understanding Its Fundamentals and Functioning

High Voltage Power Lines

Electricity is a fundamental part of our daily lives, powering everything from the smallest gadgets to massive industrial machines. It's easy to take for granted, but understanding the basics of electricity and how it works can deepen our appreciation for this incredible force and help us use it more effectively and safely.

What is Electricity?

At its core, electricity is a form of energy resulting from the movement of electrons, the tiny particles orbiting the nucleus of an atom.

When these electrons move, they create an electric current, which is what powers our devices.

Electricity can manifest in two forms:

  1. static electricity, resulting from the build-up of electric charge on a surface.
  2. current electricity, which is the flow of electric charge through a conductor.

How Electricity is Generated

Electricity generation typically involves converting various forms of energy - like mechanical, thermal, or chemical energy - into electrical energy.


This is commonly done in power plants using methods such as:

  • Burning Fossil Fuels: Coal, natural gas, or oil are burned to create steam, which drives turbines connected to generators.
  • Nuclear Power: Nuclear fission heats water to create steam, which, like in a fossil fuel plant, drives turbines.
  • Renewable Sources: Hydroelectric power uses water flow, wind turbines use wind, and solar panels use sunlight to generate electricity.



Once generated, electricity is sent through transformers to increase its voltage, allowing it to travel long distances over power lines with minimal loss of energy.


Wind and sun power generation

The Flow of Electricity: Circuits

For electricity to be useful, it must flow in a closed loop or circuit.

A basic electrical circuit includes a power source (like a battery), a conductor (like wires), and a load (like a light bulb or a motor) that uses the electricity to perform work.

When the circuit is closed, electricity flows from the power source through the conductor to the load, and then back to the source.

AC and DC: The Two Types of Electric Current

  • Direct Current (DC): In DC, the electric charge flows in one direction. Batteries provide DC.
  • Alternating Current (AC): In AC, the direction of the charge changes periodically. This is the type of electricity supplied to homes and businesses.


AC is typically used for power distribution because it's more efficient over long distances.

Most household devices are designed to use AC power, though they often convert it to DC internally.

The Role of Voltage, Current, and Resistance

Understanding electricity also involves understanding three key concepts: voltage, current, and resistance.

  • Voltage (V): This is the force that pushes electric charges through a conductor. It's measured in volts (V).
  • Current (I): This is the rate at which electric charge is flowing. It's measured in amperes, or amps (A).
  • Resistance (R): This is the opposition to the flow of current. It's measured in ohms (Ω).


Ohm's Law is a fundamental equation in electricity, relating these three concepts: V = I × R.

Lightning in the sky

Electricity in Our Daily Lives

From lighting our homes to powering our computers and smartphones, electricity is indispensable.

Its efficient use, coupled with safety practices, is essential.

Always remember that electricity, while useful, can be dangerous if mishandled.

Electricity is a remarkable and versatile form of energy.

Its generation, transmission, and the way it powers devices are fundamental to modern life. Understanding the basics of electricity not only satisfies curiosity but also empowers us to use this incredible resource wisely and safely.

As we continue to innovate and find sustainable ways to generate and use electricity, its significance in our lives is only set to grow.

A candle is lit next to a light bulb in the dark.
By Tim Turner May 15, 2025
Power outages can strike without warning—whether due to storms, fallen trees, network faults, or overloaded systems—and when they do, they remind us just how dependent we are on electricity. From keeping the lights on and food cold to charging devices and staying connected to the outside world, our homes rely on a steady power supply to function smoothly. In Newcastle and across New South Wales, outages can range from a single home losing power to widespread blackouts impacting entire suburbs or regions. When the power drops, knowing what to do—and what not to do—can help keep you safe, protect your appliances, and get you back up and running faster.
A black and white drawing of a switch with a lightning bolt on it.
By Tim Turner May 12, 2025
Electricity powers nearly every aspect of modern life—from the lights in your home to your air conditioner, hot water system, and even your phone charger. But while we depend on electricity every day, it can be incredibly dangerous if not properly managed. One critical device designed to protect you and your loved ones from electrical harm is the safety switch. Despite their importance, safety switches are often misunderstood or overlooked until something goes wrong.
A cartoon illustration of a slot machine with a lightning bolt on it.
By Tim Turner May 8, 2025
In the heart of every Australian home or business lies a vital yet often overlooked component: the electrical switchboard. Tucked away in meter boxes or mounted in discrete corners of the property, switchboards are responsible for safely distributing electricity throughout your premises. But as Australia’s energy needs continue to grow—with smart appliances, solar systems, electric vehicles, and energy-hungry devices becoming the norm—many older switchboards and meter boxes are struggling to keep up.
A bathroom with marble tiles , a tub , a sink and a window.
By Tim Turner April 28, 2025
Imagine stepping out of a warm shower or bath into the embrace of a toasty, dry towel. No more damp towels hanging in the bathroom or the unpleasant chill of winter mornings. That’s the luxury—and practicality—that heated towel rails offer. Once considered a high-end accessory found only in luxury hotels or spa resorts, heated towel rails are now a common feature in modern homes. And with good reason.
A laundry room with a washer and dryer and a water heater.
By Tim Turner April 22, 2025
Hot water is something most of us take for granted—until it’s suddenly not there. Whether you’re stepping into a cold shower, trying to wash dishes with icy water, or waiting forever for the tap to warm up, a malfunctioning hot water service can throw off your whole day. But what exactly is a hot water service? How does it work, what types are available, and how do you choose the best one for your home or business?
A man is holding a digital gauge in front of an air conditioner.
December 10, 2024
When shopping for an air conditioner, you'll likely come across product specifications measured in one of three units: Kilowatts (kW) BTU (British Thermal Units) Horsepower (hp). These measurements indicate the system's cooling or heating capacity, but their varying usage can create confusion, especially for first-time buyers.
Two white air conditioners are sitting next to each other on a white background.
By Tim Turner December 5, 2024
Split system air conditioning units are a popular choice for homes and businesses, offering efficient heating and cooling in a variety of climates. When considering a split system, many people have similar questions to ensure they choose the right unit for their needs. Here's an expanded look at one of the most common questions:
A sun , snowflake , and wrench are in a circle.
By Tim Turner October 24, 2024
Split system air conditioners are essential appliances in many homes and businesses, especially during the warmer months. Like any other complex machine, your air conditioner requires regular maintenance to function efficiently. Let's see why servicing your split system air conditioner is essential, what happens during a service, the risks of neglecting maintenance, and how often you should schedule it.
There is a large island in the middle of the kitchen.
By Tim Turner August 15, 2024
In the modern home, the kitchen is more than just a place to prepare meals. It has evolved into a central hub for socializing, entertaining, and spending quality time with family. With this evolution, the design and functionality of kitchen spaces have become increasingly sophisticated, and every element is chosen not only for its utility but also for its contribution to the overall aesthetic and comfort of the space.
Inspecting a hot water system
By Tim Turner July 30, 2024
Hot water systems are essential to modern life, providing comfort and convenience in our daily routines. From taking a hot shower to washing dishes and doing laundry, hot water is a necessity we often take for granted. However, like any other home appliance, hot water systems require regular maintenance to function efficiently and safely.
More Posts