Work, Energy, and Power MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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Elevate your grasp of Work, Energy, and Power with specialized online physics exams designed to enhance your preparation. These resources offer a thorough review of basic physics principles and complex concepts related to energy transformations and mechanical work. Dive into practice tests and MCQ answers that focus on critical topics like force and motion. By concentrating on force and motion MDCAT MCQs and other relevant questions, you can solidify your understanding and improve your exam performance.
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The power of a light bulb that uses 1500 J of energy in 75 seconds is:
A. 20 W
B. 25 W
C. 30 W
D. 40 W
Answer: 20 W
The work done to move an object with a force of 8 N over a distance of 7 meters is:
A. 56 J
B. 40 J
C. 70 J
D. 20 J
Answer: 56 J
The energy conversion in a hydroelectric power plant is from:
A. Potential to electrical
B. Electrical to potential
C. Mechanical to potential
D. Thermal to electrical
Answer: Potential to electrical
The work done to move an object with a force of 15 N over a distance of 3 meters is:
A. 45 J
B. 30 J
C. 60 J
D. 15 J
Answer: 45 J
The power of a device that uses 1200 J of energy in 60 seconds is:
A. 20 W
B. 30 W
C. 40 W
D. 60 W
Answer: 20 W
The energy of a compressed spring is an example of:
A. Elastic potential energy
B. Kinetic energy
C. Gravitational potential energy
D. Thermal energy
Answer: Elastic potential energy
The power of a motor that performs 2400 J of work in 60 seconds is:
A. 40 W
B. 30 W
C. 20 W
D. 60 W
Answer: 40 W
The work done to lift a 10 kg object to a height of 2 meters is:
A. 200 J
B. 50 J
C. 100 J
D. 20 J
Answer: 200 J
The power of a light bulb that uses 960 J of energy in 48 seconds is:
A. 20 W
B. 25 W
C. 30 W
D. 40 W
Answer: 20 W