3.1.5

Efficiency of Energy Transfer

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Efficiency of Energy Transfer

The efficiency of an energy transfer can never be more than 100. It is defined below:

Illustrative background for Efficiency (energy in joules)Illustrative background for Efficiency (energy in joules) ?? "content

Efficiency (energy in joules)

  • Efficiency = (useful energy output/total energy input) x 100
    • The useful energy output and total energy input are measured in joules (J).
Illustrative background for Efficiency (power in watts)Illustrative background for Efficiency (power in watts) ?? "content

Efficiency (power in watts)

  • Efficiency = (useful power output/total power input) x 100
    • The useful power output and total power input are measured in watts (W).

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1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

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3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Disciplinary Knowledge

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