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Q.

What is the SI unit and Commercial unit of energy?


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a

Joule and Kilowatt - Hour

b

Joule and Watt – Hour

c

Joule and Watt

d

Joule and Kilowatt 

answer is A.

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Detailed Solution

Concept- Energy can be of different types that is Potential energy, kinetic energy, chemical energy etc. The symbol for energy in the SI is J, which stands for joule.
Commercial unit is used when a large quantity of energy is expressed. The commercial unit of energy is Kilowatt hour and is denoted by kWh.
Hence, the SI unit of energy is Joule and the commercial unit is Kilowatt hour.
Hence, the correct option is 1.
 
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