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Paper 1
Topic 1 - Energy
Effiiciency
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Created by
Sonny Goodvin
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Cards (3)
What is efficiency?
The
ratio
of the useful work done by a machine, engine, device, etc, to the energy supplied to it, often expressed as a
percentage
What is the equation for efficiency?
E
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=
Efficiency\ =
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\ \frac{useful\ energy\ output}{total\ energy\ input}
t
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How can the efficiency of a system be increased?
Reducing
waste
output
Recycling waste output
