Energy and power efficiency (30) | Edexcel A-level Physics — 9PH0 | KnowledgeSet

Energy and power efficiency

Physics · A-Level · Edexcel · Edexcel A-level Physics — 9PH0 · Specification point · 30 · Mechanics

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Students should:
$\text{efficiency}=\frac{\text{useful energy output}}{\text{total energy input}}$

efficiency

=

\frac{useful power output}{total power input}

\text{efficiency}=\frac{\text{useful power output}}{\text{total power input}}