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प्रश्न
Define power.
Define the following:
Power
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उत्तर
Power is defined as the rate of doing work or work done per second.
i.e., Power = `("Work done in joule")/("Times in second")`
or, p = `("W (in joule)")/("t (in second)")`
संबंधित प्रश्न
A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to ______.
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Power P= ............ /time taken.
The S.I. unit of power is ..........
Match the following
| column A | Column B |
| A stone at a height | power |
| A Moving ball | joule |
| Energy | work done in 1 s |
| Power | potential energy |
| Watt | kinetic energy |
The expression of power P is
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Choose one or more correct alternatives.
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- The rapidity with which work is done.
- Amount of energy required to perform the work.
- The slowness with which work is performed.
- Length of time.
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Unit of power used in mechanical engineering is ______.
Name the quantity which is measured in kWh.
