Question
Define the term efficiency of a machine.
✓
Answer
The ratio of the work done by the machine to the work done on the machine is called the efficiency of a machine
$
\text { Efficiency }=\frac{\text { Output energy }}{\text { Input energy }}
$
(Work done by a machine is called the output energy and the work done on a machine is called the input energy.)
$
\text { Efficiency }=\frac{\text { Output energy }}{\text { Input energy }}
$
(Work done by a machine is called the output energy and the work done on a machine is called the input energy.)
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