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1
What is the general formula for efficiency?
Efficiency = (Useful energy output / Total energy input) × 1…
2
How is efficiency calculated using power?
Efficiency = (Useful power output / Total power input) × 100…
3
What is the formula for efficiency using work done?
Efficiency = (Useful work output / Total work input) × 100%
4
What does an efficiency of 100% represent?
An ideal system where no energy is wasted, though this is im…
5
What happens to the 'wasted' energy in an inefficient system?
It is typically dissipated into the surroundings as heat, so…
6
Can efficiency ever be greater than 100%?
No, this would violate the law of conservation of energy.
7
What unit is used to express efficiency?
It is a ratio and is usually expressed as a percentage (%) o…