Electrical energy Flashcards
0
Q
Power
A
The energy transformed to transferred per second. The unit of power is the watt(w).
1
Q
Electrical appliance
A
Machine powered by electricity.
2
Q
Watt (w)
A
The unit of power.
3
Q
Kilowatt (kW)
A
1000 watts.
4
Q
Kilo-watt (kWh)
A
Electrical energy supplied to a 1kw electrical device in 1 hour.
5
Q
Cost effectiveness
A
How much something gives value for money when purchase, running and other costs are taken into account.
6
Q
Payback time
A
Time taken for something to produce savings to match how much it cost.
