What is the mathematical representation of a machine’s efficiency? (1 point)

Question

Responses

Efficiency=EiEo100
Efficiency equals Start Fraction upper E subscript i baseline over upper E subscript o baseline End Fraction 100

Efficiency=EoEi100
Efficiency equals Start Fraction upper E subscript o baseline over upper E subscript i baseline 100 End Fraction

Efficiency=EiEo
Efficiency equals Start Fraction upper E subscript i baseline over upper E subscript o baseline End Fraction

Efficiency=EoEi100
Efficiency equals Start Fraction upper E subscript o baseline over upper E subscript i baseline End Fraction 100

Answer 1

The correct mathematical representation of a machine's efficiency is:

Efficiency = (Eo / Ei) * 100

where:

• \( Eo \) is the useful output energy or power,
• \( Ei \) is the input energy or power.

So, in your responses, the correct option is:

Efficiency = Start Fraction upper E subscript o baseline over upper E subscript i baseline End Fraction 100

This indicates that the efficiency is expressed as a percentage of output energy relative to input energy.