Electricity Flashcards
1
Q
What does energy equal
A
Energy = power x time
2
Q
What does the total cost of energy equal
A
Total cost = KWH x cost per unit
3
Q
How do you work out how much energy costs?
A
Wattage x hours used a day divided by 1000 x cost of electricity per kWH
4
Q
Work out how much the electricity costs when one unit of electricity cost 12p
A 1700 W oven for three hours
A
£61.20
5
Q
Work out how much the electricity costs When one unit of electricity costs 12p
A 2000W Electric fire for 2 hours
A
£48
