Electricity The Worlds key power source Contents 1

Electricity The World’s key power source

Contents 1. History of Electricity………………… 3 2. What is Electricity? . . ………………. . . 4 3. Light…………………. . 5 4. Direct Current……………. . 6 5. Alternating Current…………………. 7 6. Interesting Facts…………. 8

History of Electricity The first power plant opened in New York City in 1882. It was owned by Thomas Edison was a great inventor! He came up with more than 2, 000 inventions, which includes almost everything that we need to use electricity in our homes including switches, fuses, sockets and meters.

What is Electricity? Electricity comes from power stations, the wind, the sun, water and even animal waste! Electricity is described as the flow of electrons, which is named as current. Conductors are described as substances which allow electrons to flow through them. Insulators are described as substances in which electrons can't flow.

Light An electric light is a device that produces visible light from electric current. It is the most common form of artificial lighting and is necessary to modern living, providing interior lighting for buildings and exterior light for evening and nighttime activities. The electricity used over the lifetime of a single glowing bulb costs 5 to 10 times the original price of the bulb itself.

Direct Current Direct current (DC) is the unidirectional flow of electric charge as it only flows in a constant direction. A battery is good example of DC power supply. DC is used to charge batteries and as a power source for electronic systems.

Alternating Current Alternating current (AC) is an electric current which sometimes reverses direction unlike direct current (DC) which flows only in one direction. AC is the form in which electric power is delivered to businesses and residences. For example, it is what is used when such items as kitchen appliances and televisions are plugged in.

Interesting Facts ØElectricity travels at the speed of light. That’s more than 186, 000 miles per second! ØA bolt of lightning can measure up to 3, 000 volts, lasts less than one second, and can reach temperatures of 30, 000 °C. ØA 600 megawatt natural gas plant can power 220, 000 homes. ØElectric eels can produce strong electric shocks of around 500 volts!

THE END Thank you! By: Zane