OUTCOME
By the end of the lesson you will understand how domestic electricity is wired and used in a household.
Electricity in the house is delivered as a alternating current at 240 V. Households use a three pin plug, with an active, neutral and Earth connection. Electricity is billed in the energy unit kilowatt hour.
LEARNING TASK
Explore and explain
Watch the following screencast (taking notes) on simple domestic lighting and power circuits.
Watch this video to understand how to calculate electrical energy usage from your bill.
Find an electricity bill at home and look at the data that is presented. How many joules of energy does your household us per day?
Elaborate and evaluate
Next lesson:
Read pages 91 - 98
Please bring in an old electricity bill
(a photo will be ok)
Also please take a photo of your Fusebox at home
Try questions 1 - 9 (page 98)