Practice efficiency o level physics MCQs, O level physics test for online courses learning and test prep. Energy, work and power quiz has multiple choice questions (MCQ), efficiency o level physics quiz questions and answers to learn.

IGCSE physics practice test MCQ on output of a truck is 4500 j and its efficiency is 50%, input energy provided to truck is with options 5000 j, 900 j, 9000 j and 500 j problem solving skills for viva, competitive exam prep, interview questions with answer key. Free study guide is for online learning efficiency o level physics quiz with MCQs to practice test questions with answers. Efficiency O Level Physics Video

MCQ. Output of a truck is 4500 J and its efficiency is 50%, the input energy provided to the truck is

1. 5000 J
2. 900 J
3. 9000 J
4. 500 J

C

MCQ. In a typical power station, amid a series of energy transfers and conversions, about 70% of the energy input gets wasted in the form of thermal energy, the efficiency of such a power station is about

1. 0.3
2. 0.4
3. 0.7
4. 1

A

MCQ. A car uses total energy of 2500 J and the output is 750 J. The efficiency of the car is

1. 50%
2. 30%
3. 25%
4. 80%

B

MCQ. Formula for efficiency is

1. (energy input / energy output) × 100
2. (energy input / energy output) × 100
3. (useful energy input / energy output) × 100
4. (useful energy output / total energy input) × 100

D

MCQ. Efficiency of a machine is measured by

1. (Wasted Energy Output ⁄ Energy Input) × 100 %
2. (Energy Input ⁄ Wasted Energy Output) × 100 %
3. (Useful Energy Output ⁄ Energy Input) × 100 %
4. (Energy Input ⁄ Useful Energy Output) × 100 %

C