Transferring Electrical Energy Worksheet Page 25
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46(b)
(i)
Australia has one of the lowest electricity prices in the world.
How does this low price seem to affect the amount of ‘standby energy’ wasted?
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(1)
(ii)
In Australia, most electricity is generated in coal-burning power stations.
The Australian government wants less electricity to be wasted.
Wasting less electricity would be good for the Australian environment.
Explain why.
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(2)
(c)
Energy is not usually measured in kilowatt-hours.
Which one of the following units is usually used to measure energy?
Draw a ring around your answer.
hertz
joule
watt
(1)
(d)
(i)
Electricity in Japan costs the equivalent of 17 pence per kilowatt-hour.
Use the information in the bar chart and the equation in the box to calculate how
much the ‘standby energy’ used in an average Japanese home costs each year.
total cost = number of kilowatt-hours × cost per kilowatt-hour
Show clearly how you work out your answer.
Give your answer in pence.
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Cost = ........................................ pence
(3)
Page 25 of 46
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