(A) Define 1 kwh
(B) a crane is lifting a body to a height h in time t. Find the relation between the power of crane to the speed at which it is lifting the object
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1 Kwh can be defined as the amount of electrical energy consumed when a 1000 watt electrical appliance is used for an hour. The unit of energy is watt. 1 Watt = 1 Joule /second. One kilowatt hour is 3.6 megajoules. It is the amount of energy converted if work is done at the rate of 1000 watts per hour.
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Answer:
1 Kwh can be defined as the amount of electrical energy consumed when a 1000 watt electrical appliance is used for an hour. The unit of energy is watt. 1 Watt = 1 Joule /second. One kilowatt hour is 3.6 megajoules. It is the amount of energy converted if work is done at the rate of 1000 watts per hour.
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