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=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 100 End Fraction

Efficiency=EoEi100

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) produced by the machine.
• \( Ei \) is the input energy supplied to the machine.

This can also be written as:

Efficiency = (Eo / Ei) × 100

If using the alternative symbols as per your options, it can be:

Efficiency = (Eo / Ei) 100

So, the choice that matches this is:

Efficiency = Eo / Ei × 100