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Q.

What is the unit of electrical energy?


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a

Joule

b

Watt

c

Ohms

d

Volts 

answer is A.

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Detailed Solution

This is because electrical energy is said to be one joule when one ampere of current flows through the circuit for a second when the potential difference of one volt is applied across it. Therefore electrical energy is the product of power and time. Hence, the unit of electrical energy is watt second or joule.
 
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