The cost of electricity Flashcards
1
Q
What are the units of eletrical energy
A
Kilowatt Hours
2
Q
What is the first energy transfer from an electrical appliance
A
Electrical to either heat/sound/light/chemical/kinetic etc
3
Q
The amounts of energy transferred by an appliance depends on…
A
…its power and the amount of time the appliance is switched on
4
Q
What is energy measured in
A
Joules
5
Q
What is power measured in
A
Watts or Kilowatts
6
Q
How do you work out units of electricity
A
Units = kW x hours
7
Q
How do you work out cost of electricity
A
Cost = units x price
