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Q.

The SI unit of energy is?


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a

Volt

b

Joule

c

Watt

d

None of the above 

answer is B.

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Detailed Solution

Concept- Energy is the ability to do tasks. The four types of energy are nuclear energy, electrical energy, kinetic energy, and potential energy. The joule is the SI unit for energy.  The symbol for joule is J.Energy can transform from one type of energy to another. For example running of the fan, in fan electrical energy result in the rotation of the fan, in fan electrical energy get converted into mechanical energy.
The SI units for power is watt and for potential difference is volt.
Hence, option 2 is the correct answer.
 
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