Spec 0625
Revise CIE IGCSE Physics 1.7.3c Efficiency of energy transfer with the question bank and revision guides.
Understand, qualitatively, the concept of efficiency of energy transfer • Supplement: Define efficiency as: (a) (%) efficiency = (useful energy output) / (total energy input) (× 100%) (b) (%) efficiency = (useful power output) / (total power input) (× 100%); recall and use these equations
