The emphasis in this topic is to understand everyday electrical devices in term of the physics involved in their operation. Your students will be able to do this provided that you continue to use good examples that they can relate to. Try this video clip to start your lessons on domestic appliances.
In looking at energy transfers be careful to keep it relevant. Having a collection of mains items such as a hairdryer, a radio, a kettle, a toaster and a desk lamp that you can pull out to make a point will be useful.
You also need to explain the whole national grid supply system from the power station, through the use of transformers to the end users, us. This video clip is excellent for doing the job.
Your students will need their math skills for using the equations relating p.d., current, power, energy, and time, to solve problems on energy transfer.
Whilst this list provides a source of information and ideas for experimental work, it is important to note that recommendations can date very quickly. Do NOT follow suggestions which conflict with current advice from CLEAPSS, SSERC or recent safety guides. eLibrary users are responsible for ensuring that any activity, including practical work, which they carry out is consistent with current regulations related to Health and Safety and that they carry an appropriate risk assessment. Further information is provided in our Health and Safety guidance.