Answer
Verified
436.2k+ views
Hint:Energy is the ability and necessity to be possessed by the body to do work. Energy can be found in many things and can take different forms. We have seen in food packets and ready to cook food it is always mentioned how much energy it will give, since, it is defined as the ability to do work it has to be measured in units.
Complete step by step answer:
Energy can take different forms such as kinetic, potential, electrical, chemical, nuclear, thermal, etc. The SI unit of measuring energy is Joules, denoted by the symbol J. 1 joule is defined as the amount of work done when the force of 1 N acts on a body and the displacement is 1 m.
Commercial units of energy are needed when large quantities of energy are to be expressed and this is used in industries and factories. The commercial unit of energy is Kilowatt-hour denoted by kWh. One kilowatt-hour is defined as the amount of energy that is consumed by a machine in one hour working at a constant rate of one kilowatt.
Hence, an S.I unit of energy is joule and the commercial unit is Kilowatt-hour.
Note:Another common unit of energy is watt-hour and others are horsepower. Work and energy have the same units and energy is a scalar quantity. There is a relationship between the SI unit of energy and the commercial unit of energy.
1 kWh = 1kW $\times$ 1h = 1000W $\times$ 1h = 1000(J/s) $\times$ 3600 s = 3.6 $ \times {10^6}$J.
Complete step by step answer:
Energy can take different forms such as kinetic, potential, electrical, chemical, nuclear, thermal, etc. The SI unit of measuring energy is Joules, denoted by the symbol J. 1 joule is defined as the amount of work done when the force of 1 N acts on a body and the displacement is 1 m.
Commercial units of energy are needed when large quantities of energy are to be expressed and this is used in industries and factories. The commercial unit of energy is Kilowatt-hour denoted by kWh. One kilowatt-hour is defined as the amount of energy that is consumed by a machine in one hour working at a constant rate of one kilowatt.
Hence, an S.I unit of energy is joule and the commercial unit is Kilowatt-hour.
Note:Another common unit of energy is watt-hour and others are horsepower. Work and energy have the same units and energy is a scalar quantity. There is a relationship between the SI unit of energy and the commercial unit of energy.
1 kWh = 1kW $\times$ 1h = 1000W $\times$ 1h = 1000(J/s) $\times$ 3600 s = 3.6 $ \times {10^6}$J.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE