Unit Award Scheme

122584 ELECTRICITY (UNIT 3)

In successfully completing this unit, the Learner will have		Evidence needed
shown knowledge of
1	the main difference between direct and alternating voltage and current, stating what voltage and current the UK's mains supply is	Summary sheet and/or student completed work
demonstrated the ability to
2	identify and describe the key function of each wire in a three-core cable connected to the mains	Summary sheet and/or student completed work
shown knowledge of
3	the potential difference between a live wire and earth, 0V, being approximately 230V	Summary sheet and/or student completed work
4	both neutral wires and human bodies being at, or close to, the 0V earth potential	Summary sheet and/or student completed work
demonstrated the ability to
5	explain that a live wire may remain dangerous when a switch in the mains circuit is open due to it providing a connection between the live wire and earth	Summary sheet and/or student completed work
6	explain how the power transfer in any component is related to the potential difference across it and also the current through it	Summary sheet and/or student completed work
7	calculate power by recalling and applying two equations from the given physics equations sheet	Summary sheet and/or student completed work
8	describe the ways appliances transfer energy to the kinetic energy of motors or the thermal energy of heating devices	Summary sheet and/or student completed work
9	calculate the amount of energy transferred by electrical work using two equations from the given physics equations sheet	Summary sheet and/or student completed work
10	explain how the power of a circuit device is related to the potential difference across it, the current through it, and the energy transferred over a given time	Summary sheet and/or student completed work
11	describe the relationship between the power ratings for two different light bulbs and the changes in energy when they are in use	Summary sheet and/or student completed work
shown knowledge of
12	the National Grid as a system of cables and transformers linking power stations to consumers	Summary sheet and/or student completed work
13	the key reasons the National Grid system is an efficient way to transfer energy, including reference to changes in potential difference reducing current.	Summary sheet and/or student completed work

All outcomes recorded on an AQA Summary Sheet

Approved 28 November 2024Level - Level One