Kilowatt - hour is the commercial unit of electrical energy. 1 kWh = 1 kW x 1 h (A) The commercial unit of energy is KiloWaltHour( KWh.) What is likely to happen in this case and why ? SI unit of energy is Joule. 53. It is equal to the energy transferred to (or work done on) an object when a force of one newton acts on that object in the direction of the force's motion through a distance of one metre (1 newton metre or N⋅m). (b)=P/V I1=60/V I2=40/V I1/I2=60/V/40/V =60/40 => I1>I2 Since, R is indirectly proportional to I I2 has high resistance So, 40W lamp has greater resistance. E = P × t whereas electric power is equal to the rate of doing work by an energy source i.e. Ltd. All rights reserved. It is equal to the product of power and time i.e. )List any three advantages of using solar cooker for cooking instead of fossil fuels. Kilowatt - hour is the commercial unit of electrical energy. 1V = 1J / 1C. The electric energy used in houses, factories etc. We have seen that power is the rate of energy consumed or delivered. i hope u liked it. The cost of electric current is also fixed per one kilowatt hour. If 1 joule of energy is used per second, we say that energy is used at the rate of 1 watt. 1 kWh = 3600000 J The relationship between kwh and commercial unit is: 1 KWh=3.6*106J (or 3600000 J) One KiloWaltHour is: 1kWh = 1kW * 1h The kilowatt-hour is a composite unit of energy equal to one kilowatt (kW) of power sustained for one hour. The relatively higher levels of energy in human nutrition are more likely to be… Definition. what is the commercial unit of electrical eneergy? 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