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प्रश्न
Define average power.
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उत्तर
A body can do different amount of work in different time intervals. Hence, it is better to define average power. Average power is obtained by dividing the total amount of work done in the total time taken to do this work.
`"Average Power"="Total work done"/"Total time taken"`
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संबंधित प्रश्न
Define 1 watt of power.
A lamp consumes 1000 J of electrical energy in 10 s. What is its power?
A battery lights a bulb. Describe the energy changes involved in the process.
What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer.
A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9.8 m/s2)
What is the power of a body which is doing work at the rate of one joule per second?
Fill in the blanks with suitable words :
One watt is a rate of working of one ___________ per ___________.
A car of weight 20000 N climbs up a hill at a steady speed of 8 m/s, gaining a height of 120 m is 100 s. Calculate : work done by the car.
In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m.
How much energy is transferred when one box is lifted?
In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m.
If the man lifts 4 boxes per minute, at what power is he working?
(g = 10 m s−2)
