Question

The commercial unit of energy is $kWh$. It is equal to joules.

• A. $1.3\times {10}^6$​
• B. $3\times {10}^6$​
• C. $3.6\times {10}^6$​
• D. $6\times {10}^6$​

Answer 1

The correct option is C $3.6\times {10}^6$​

We know, watt is the unit of power. $1W=1J/s$
$\text{1 kWh}$ is the energy used for one hour. $1$ hour is equal to $3600s$.
So, $1kWh=1000J/s\times 3600s$
$1kWh=3.6\times {10}^{6}joules$​