Give Scientific reasons . In practice, the unit kWh is used for the m – InterviewSolution

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1.	Give Scientific reasons . In practice, the unit kWh is used for the measurement of electrical energy, rather than Joule.
Answer» Solution :The UNIT of electric. POWER is 1 W (Watt), which is a very small unit, hence 1000 W or 1 kWused for the MEASUREMENT of electric power rather than Joule . 2. If 1 kWpower isused for 1 hour it MEANS1 kW x 1 hr of electric energyis used. 3.`therefore` 1 kW = 1 kilowatt hour = 1000 W x 3600 s = 3.6 x `10^6`WS = 3.6 x `10^6` J

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