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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Solution

Power is the rate of doing work.
Kilowatt is the unit of power and kilowatt hour is the unit of energy.

Given : Height, $h = 20 m$ , and $M a s s, m = 2000 \times 10^{3} k g = 2 \times 10^{6} k g$

We know that,
Power = Energy utilized / time taken
=> $P o w e r = \frac{m g h}{t} = \frac{2 \times 10^{6} \times 10 \times 20}{60} W$
=> $P o w e r = 6.67 * 10^{6} W = 6.67 * 10^{3} k W$

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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=10ms−2)

Power is the rate of doing work. Kilowatt is the unit of power and kilowatt hour is the unit of energy. Given : Height, h=20 m, and Mass,m=2000×103kg=2×106kg We know that, Power = Energy utilized / time taken => Power=mght=2×106×10×2060W => Power=6.67∗106W=6.67∗103kW

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? ( $g = 10 m s^{- 2}$ )