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

Question

Responses

Efficiency=Eo/Ei 100
Efficiency equals Start Fraction upper E subscript o baseline over upper E subscript i baseline End Fraction 100

Efficiency=Ei/Eo 100
Efficiency equals Start Fraction upper E subscript i baseline over upper E subscript o baseline End Fraction 100

Efficiency=Eo/Ei100
Efficiency equals Start Fraction upper E subscript o baseline over upper E subscript i baseline 100 End Fraction

Efficiency=Ei/Eo
Efficiency equals Start Fraction upper E subscript i baseline over upper E subscript o baseline End Fraction

Answer 1

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

Efficiency = (Eo/Ei) * 100

where:

• \( Eo \) is the useful output energy (or work done),
• \( Ei \) is the input energy (or work put in).

So, the correct option from the responses is:

Efficiency = Eo/Ei * 100