Difference between revisions of "Useful Energy"
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: '''Useful Energy''' = ([[Total Energy]] transferred) - ([[Wasted Energy]]) | : '''Useful Energy''' = ([[Total Energy]] transferred) - ([[Wasted Energy]]) | ||
: '''Useful energy''' can be used to calculate the [[Energy Efficiency|efficiency]] of an [[Energy Transfer|energy transfer]]. | : '''Useful energy''' can be used to calculate the [[Energy Efficiency|efficiency]] of an [[Energy Transfer|energy transfer]]. | ||
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| + | ===References=== | ||
| + | ====AQA==== | ||
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| + | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Useful energy, pages 14-19, 21, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
Latest revision as of 16:30, 14 November 2019
Key Stage 4
Meaning
Useful energy is the energy transferred to a device's intended purpose.
About Useful Energy
- When energy is transferred, the total energy transferred will not all go into one store. Some will be transferred usefully and some will be wasted.
- Useful Energy = (Total Energy transferred) - (Wasted Energy)
- Useful energy can be used to calculate the efficiency of an energy transfer.