What are the equations to work out: Efficiency, Total input and Useful output?
/ =Divide x =Multiplied = =Equals
Efficiency (In a Decimal) = Useful Output / Total output
Kettle: 100J / 600J = 0.16666667 x 100 = 16.6% Efficiency
Kettle: 100J / 600J = 0.16666667 x 100 = 16.6% Efficiency
Total Input = Useful Output / Efficiency (In a Decimal)
Microwave = 400J / 0.667 = 599.70015 = 600J
Microwave = 400J / 0.667 = 599.70015 = 600J
Useful Output = Total Input x Efficiency (In a Decimal)
Washing machine = 800J x 0.5 = 400J
Washing machine = 800J x 0.5 = 400J