What is electricity?
Electricity is a naturally occurring force that exists all around us.
How is electricity being produced?
Electricity energy comes from 2 main sources. These are mains electricity and electricity cells.
Main electricity is generated in power stations. The plugs of electrical appliances are inserted into main sockets to obtain this electricity.
Electric cells give out only a little energy. They are called batteries.
What is current?
An electric current is the flow of electrons in one direction in a circuit. We use an ammeter to the size of the electric current. The SI unit for electric current is the ampere (A). The picture shows a ammeter.
What is voltage?
Voltage is a measure of how much energy the electrons receive. To measure voltage, we use voltmeter. The SI unit for voltage is the volt (V). The picture shows a voltmeter.
Uses of electricity
Electricity is the most widely used type of energy in the world. We use it for work and for play, in the home and at work. In the past it mainly provided us with light and heat. Nowadays, the number of electronic appliances has hugely increased, we now use it almost everyday. We also use it for daily applications such as light, fan, etc. It also improves our lives.
Source obtained from textbooks, http://www.teachnet.ie/pcoakley/consumers.htm,
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