Work, Energy, and Power MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The rate at which energy is transferred is known as:
A. Power
B. Energy
C. Work
D. Force
Answer: Power
What is the work done by a force of 25 N moving an object 8 meters horizontally?
A. 200 J
B. 150 J
C. 50 J
D. 100 J
Answer: 200 J
If a car has a mass of 800 kg and is traveling at a speed of 15 m/s, what is its kinetic energy?
A. 180,000 J
B. 120,000 J
C. 90,000 J
D. 60,000 J
Answer: 120,000 J
The amount of work done in stretching a rubber band is stored as:
A. Elastic potential energy
B. Kinetic energy
C. Gravitational potential energy
D. Thermal energy
Answer: Elastic potential energy
If the velocity of an object is halved, what happens to its kinetic energy?
A. It is reduced to one-fourth
B. It is reduced to one-half
C. It remains the same
D. It doubles
Answer: It is reduced to one-fourth
What is the power output of a machine that does 5000 J of work in 50 seconds?
A. 100 W
B. 200 W
C. 500 W
D. 1000 W
Answer: 100 W
Which of the following is not a form of energy?
A. Force
B. Kinetic energy
C. Potential energy
D. Thermal energy
Answer: Force
Which principle states that energy cannot be created or destroyed, only transformed from one form to another?
A. Law of Conservation of Energy
B. Work-Energy Theorem
C. Newton's First Law
D. Law of Universal Gravitation
Answer: Law of Conservation of Energy
The amount of work done to lift a 60 kg object to a height of 10 meters is:
A. 6000 J
B. 600 J
C. 1000 J
D. 4000 J
Answer: 6000 J