Electricity as Energy
Key Learning Goals:

Task A  Voltage, Current and Power
Learning Goals: to explain what current and voltage are.
First Blank Slide:
Second Blank Slide:
Third Blank Slide:

Current
Voltage
Power

Task B  My energy usage
**Power companies don't charge in "Joules" they use another unit called a kW hour (kilowatt hour). Work out how to calculate this and add the necessary columns to your spreadsheet. Find out typical NZ electricity prices and calculate your rough daily electrical expenditure.
 Open up the "My Energy Profile" spreadsheet found in your Google Drive
 Follow the instructions below to estimate your energy use each day
 In the red columns try to think through EVERY appliance / tool etc which you use each day and list each one along with an estimation of how many hours it is turned on for. Split shared appliances such as the oven to cook your dinner by the number of people in your family. Don't forget lights and heating.
 Use the links below and google to estimate the power used by each appliance while it is on. List of appliances #1 or another list HERE or another HERE. Record this data in the orange column.
 Use the formulae shown in the example to complete the calculations for the other columns. You should get a final value in Joules (the unit we measure energy in) for each appliance.
 Create a sum total box and add the number of Joules used by each individual appliance together.
**Power companies don't charge in "Joules" they use another unit called a kW hour (kilowatt hour). Work out how to calculate this and add the necessary columns to your spreadsheet. Find out typical NZ electricity prices and calculate your rough daily electrical expenditure.