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Institution of Engineering and Technology (IET)
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Calculate energy use at home
In this activity students will learn about what is meant by mains electricity and how it is transported to our homes. Students will calculate the energy usage of different electrical appliances. They will first calculate the power consumption using Power (P) = Current (I) x Voltage (V), then use the results of these calculations to work out how much energy each appliance uses in kilowatt hours (kWh). An extension task encourages discussion of how we can reduce our energy consumption and the benefits of doing so.
This activity could be used as a main lesson activity to teach about energy and electrical power, and how each are calculated. It could also be used as part of a wider scheme of learning focussing on electricity and the National Grid or as an exercise to use mathematical skills in a practical context.
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