100 joules work has been done by an agency in 10 seconds. What is the power of agency?
Correct answer: C. 10 watt
- A. 1000 watt
- B. 100 watt
- C. 10 watt
- D. 0.10 watt
Explanation
Power is the amount of energy transferred or converted per unit time.Power = energy / timeGiven that,Work done = 100JTime taken= 10sPower = energy / timePower= 100/10Power=10 Watt
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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About Power
Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
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