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Mathematically, % efficiency is defined as:

9th Class Punjab Board Exams Quizzes MCQs Quizzes Punjab Physics Online 9th Class Test Lesson 6 Work and Energy

Question:
Mathematically, % efficiency is defined as:

Option A):
Efficiency % =Work Output/ Work Input * 100
Option B):
Efficiency % = ( input energy)/(output energy) x 100
Option C):
Efficiency % = (work)/(time) x 100
Option D):
Efficiency % = (required form or input)/(total output energy) x 100

Correct Answer is Option A):
Efficiency % =Work Output/ Work Input * 100