Syllabus Society has become increasingly dependent on electricity over the last 200 years. One of the main advantages of electricity is that it can be moved with comparative ease from one place to another through electric currents. Series and parallel circuits serve different purposes in households. The amount of energy transformed in an appliance is related to the power rating of an appliance and the length of time it is used. Electric currents also produce magnetic fields and these fields are used in different technologies in the home.
Safety devices are important in household circuits.
8.4 Moving About Contextual Outline Increased access to transport is a feature of today s society. Most people access some form of transport for travel to and from school or work and for leisure outings at weekends or on holidays. When describing journeys that they may have taken in buses or trains, they usually do so in terms of time or their starting point and their destination. When describing trip they may have taken in planes or cars, they normally use the time it takes, distance covered or the speed of the vehicle as their reference points. While the distance and speed are fundamental to the understanding of kinematics and dynamics, very few people consider a trip in terms of energy, force or the momentum associated with a vehicle, even at low or moderate speeds.