Electrical Circuits

A simple Electric Circuit is a closed connection of Batteries, Resistors, Wires. An Electric circuit consist of voltage loops and current nodes. Simple circuits are categorized in two type:

Series Circuit: is a circuit that has only one pathway. There are no branches in the circuit, and hence the electricity can only travel in one route. In series circuits, current is constant, but the voltage is different, and adds to the total voltage.

Parallel Circuit: is a circuit with two or more paths. The current is spread along the various branches. The current in one branch will not be the same as in other branches (unless all the resistances are the same). In parallel circuits, the voltage is constant, but the current varies, and adds up to the total current in the circuit.

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Static Electricity

You have probably experienced static electricity. It's the charge that you create when you scuff your feet on a rug. Then when you touch a doorknob, you get a small shock. That's static electricity.

The reason why it works is a little more complicated. To start, you have to know that every object is made up of billions of tiny particles, called protons and electrons. These particles are so small they can only be seen with special microscopes. Despite their small size, protons and electrons carry an electrical charge.

Protons carry a "positive" charge, while electrons carry a "negative" energy charge.

Usually, the two different charges balance each other out, and nothing happens. But when two objects with like charges (all positive or all negative) come together, the charges repel and the objects move away from each other. Objects with opposite charges attract each other because the different charges want to enter a state of balance with each other.

Objects can get a negative charge by picking up electrons from other objects. For example, when your shoes scuff against the rug, your shoes are actually picking up electrons from the rug. The electrons fly over your body, giving you a negative charge.

Your new electrons fly over your body because they are looking for a positive charge. If you touch a metal doorknob, the electrons on your body will leap into the metal, attracted by the protons there. The transfer of electrons is actually a small electrical current, and produces the tiny electric shock you feel.

How Does Electricity Gets To Our Houses?

In our houses we have many artifacts that works with electricity, like the TV, the radio or some other stuff. But do we know how the electricity gets to our houses?

First, it pass through the generating station. Generating stations are where huge amounts of power are first created. At these generating stations, heat from the burning of fossil fuels is used to boil large amounts of water, which produces steam. This steam is then forced through the blades of a turbine, causing it to turn. The spinning turbine is attached to magnets that are inside a generator. This process transforms the energy created by the spinning turbine into electrical energy.
Electricity leaves the generating station and travels through a web of 500,000- and 230,000-volt transmission lines that connect these stations to key distribution points. These distribution points are called receiving stations.

From the receiving stations, power travels through 69,000-volt sub-transmission lines to distribution substations. These substations usually serve a four-square-mile-area and several thousand customers. At the substations, power is transformed from 69,000 volts to 12,000 volts and is split among several circuits. Each circuit serves as many as 600 residential customers. In newer neighborhoods, 12,000-volt circuits are underground. In older neighborhoods, overhead lines still are in use.

For underground circuits, the system uses transformers mounted on concrete pads at ground level. For overhead circuits, transformers are mounted on poles. These transformers convert the power to 110/220 volts for delivery to homes, schools, hospitals and small businesses. The 110-volt power is used to operate smaller appliances while the 200-volt power operates larger appliances like ovens and clothes dryers. After power leaves the distribution station, it goes through one more transformer before it can be used in your home.

What is Electricity?

Would you imagine your home without electricity? There would be no TV, computer or video games. You'd have to do your homework and your housekeeping by candlelights or oil lamps. You wouldn't be able to listen to your favourite artists and bands on the radio or CD player.

So, there are many things that we couldn't be able to do without electricity.

But, what is electricity?

Electricity is a form of energy that starts with atoms. You can't see atoms because they're too small, but they make up everything around us. There are three parts to an atom: protons, neutrons and electrons. Electricity is created when electrons move from atom to atom. There are a number of ways to make electrons move, but most electricity is produced at power plants.

Welcome

Hey everybody, this is my first new blog. I'm going to talk you about the electricity. The importance that it has in our lives, how it is produced, the way it gets to our houses and many artefacts that works with the electricity. Well, I hope you enjoy this blog. If you want to help me leave your comments saying what should I add to the page and what things would you like to see on my page. Have a nice day.