Multiple choice

What is the equation for Efficiency?

  1. Eff = useful output x total input

  2. Eff = useful output / total input

  3. Eff = total input / useful output

  4. Eff = waste output / total input

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Efficiency is defined as the ratio of useful energy or power output to the total energy or power input.