If an amount of work △W is done by an agent in time interval △t, the power of that agency Will be:
Correct answer: A. △W /△t
- A. △W /△t
- B. △t / W△
- C. △t / △W
- D. △W + △t
Explanation
Thus power is defined as the rate of transfer of energy. In other words, we also define power. The amount of work done by a body in a one second is called power. If W is work done by a body in time t then, power is given by: P=W/t
This question appeared on the ETEA 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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