Title Description:
In this title, we will consider electricity and its use as a provider of en...In this title, we will consider electricity and its use as a provider of energy. We will look at the difference between direct current, which is supplied by cells and batteries, and alternating current, which is used in mains supply. We will consider the heating effect of a current flowing through a conductor and how electrical energy is transformed to useful energy. The title will also study safety aspects and how insulation, earthing, fuses and circuit breakers can be used to protect appliances, and help minimise the risk of electric shock to the user. The wiring of a domestic plug will be described, and we will discuss how to calculate energy transformed and power. We will consider the National Grid and the high voltages at which electricity is transmitted. Finally, we will discuss the units of measurement used in electricity.
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