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Efficiency

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A general definition of efficiency is the ratio between the useful energy or power output and the energy or power input - and can be expressed as

μ = Eo / Ei                                    (1)

where

μ = efficiency

Eo = useful energy or power output(Joules, W)

Ei = energy input or power (Joules, W)

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Related Topics

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Power is the rate at which work is done or energy converted.

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