4.4 Efficiency

Efficiency = useful energy output/total energy input

Version 1

Efficiency = Useful E_out / Total E_in x 100

Useful E_out = Useful Energy out (J )

Total E_in = Total Energy In (J)

Efficiency = Efficiency ( % )

Version 2

Efficiency = Useful E_out / Total E_in

Useful E_out = Useful Energy out (J )

Total E_in = Total Energy In (J)

Efficiency = Efficiency (N/A; a pure number between 0 and 1)