Question

The value of commercial unit of electrical energy in terms of joules:

• A. $3.6\times {10}^6$ J
• B. $36\times {10}^6$ J
• C. $.36\times {10}^6$ J
• D. none of the above

Answer 1

The correct option is A $3.6\times {10}^6$ J

The commercial unit of electrical energy is Kilo Watt hour (kWh) where, 1 kWh =1000 Watt hour (Wh).
That is ,
$\left(1000W\right)\times (60\times 60seconds)=3.6\times {10}^{6}Joules$.
Hence, the unit of electrical energy in terms of joules is $3.6\times {10}^{6}Joules$.