Advertisements
Advertisements
प्रश्न
What is the power of a body which is doing work at the rate of one joule per second?
Advertisements
उत्तर
1 watt is the power of a body working at the rate of 1 Joule per second.
APPEARS IN
संबंधित प्रश्न
Define 1 watt of power.
A lamp consumes 1000 J of electrical energy in 10 s. What is its power?
A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9.8 m/s2)
Fill in the blank with suitable word :
Power is the rate of doing ___________.
The power output of an engine is 3kW. How much work does the engine do in 20 s?
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.
Define power. Give the SI unit of power.
A boy weighing 40 kg carries a box weighing 20 kg to the top of a building 15 m high in 25 seconds. Calculate the power. (g = 10 m/s2)
Which one of the following statements about power stations is not true?
An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration of free fall is 10 m/s2, the power in W developed by the motor in raising the load is :
