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Q.

Commercial unit of electrical energy is _______.


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a

Joule 

b

Joule/second 

c

watt 

d

kilowatt-hour 

answer is D.

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Detailed Solution

Concept: The commercial use of electricity is kilowatt-hour. This is also written as kWh . This is mostly used for the electric utilities.
The unit of electricity is kilowatt-hour (kWh).
Which is used for billing units of energy that are delivered that are consumed by electric utilities.
Hence, the correct option is 4.
 
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Commercial unit of electrical energy is _______.