If a power of 1 kW is maintained for 1 sec, then work done is equal to:
Correct answer: A. 103J
- A. 103J
- B. 105J
- C. 3.6 x 10^5J
- D. 3.5 x 10^6J
Explanation
Power = work done / time Work done = power x time Power = 1kW = 1000 W = 1000 x 1 = 1000 J = 103J
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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