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7. Definc 1W power. Explain the larger commercial unit ofenergy kWh. |
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Answer» The watt (symbol: W) is a unit ofpower. In the International System of Units (SI) it isdefinedas a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer. Commercial Unit of Energy. The SIunitjoule is too small to express verylargequantities ofenergy. Hence we use abigger unitcalledkilowatthour (kWh) to expressenergy. 1kWhis the amount ofenergyconsumed by an electrical gadget in one hour at the rate of 1000 J/s or 1kW. |
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