Learning Outcomes:

1. describe the use of the heating effect of electricity in appliances such as electric kettles, ovens and heaters
2. recall and apply the relationships P = VI and E = VIt to new situations or to solve related problems
3. calculate the cost of using electrical appliances where the energy unit is the kWh
4. state the hazards of using electricity in the following situations:

5. explain the use of fuses and circuit breakers in electrical circuits and of fuse ratings
6. explain the need for earthing metal cases and for double insulation
7. state the meaning of the terms live, neutral and earth
8. describe the wiring in a mains plug
9. explain why switches, fuses, and circuit breakers are wired into the live conductor