Electricity

Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others.

The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positive charge from an arbitrarily chosen reference point to that point without any acceleration and is typically measured in volts.

Electric power where electric current is used to energise equipment; Electronics which deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies.

Theory and Uses

Electricity is a really fast way to transfer energy. Energetics can be used to generate electricity and because electricity travels really fast, it is so far the best way to transfer energy. Electric charge is caused by any atom that has a charge imbalance. This is caused through many means but will be discussed more in the Chemistry page. Once you have a charge imbalance, it will be attracted to the opposite type of charge. Positive will be attracted to negative and vice versa. You can harness this by creating or using a substance that has an easy path for this charge to flow through. These materials are called conductors, and the opposite of a conductor is called an insulator. Insulators have a really high resistance to flow of electric charge. Resistance is the term that is used to describe blocks in the electricity's path. Similar to water in a river, the more rocks and stuff are in the river, the more it has to bounce around and thus the slower the average current of the river is. The same is true for electricity. The thinner the conductor, or the less it is able to conduct, the higher the resistance becomes and the lower the current becomes. We can use this charge through a conductor to carry energy. The best conductor to expense ratio we have found is in a material called copper. That is the material you will see in wires all around you.

There are two methods of producing current.

Dependencies

• Energy
• Energetics
• Fire
• Heat
• Electricity
• Generator

See also

• Biomass

References

This article uses material from the Wikipedia article Electricity, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).