What is power? How do you differentiate kilowatt from kilowatt hour?
What is power? How do you differentiate kilowatt from kilowatt hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of water falls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)
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Power is the rate of doing work. Kilowatt is the unit of power and kilowatt hour is the unit of energy.
h = 20 m, and mass = 2000 × 103 kg = 2 × 106 kg
Power = m g h / t = 2 x 106 x 10 x 20 /60 w
= 4 / 6 x107w
= 2 / 3 x 107w
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