Question

The number of joules contained in $1kWh$ is

• A. $36\times {10}^2$
• B. $36\times {10}^3$
• C. $36\times {10}^4$
• D. $3.6\times {10}^6$

Answer 1

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

1 KWh = 1000 $\ast$ joule/sec $\ast$ 60 $\ast$ 60 sec

1KWh = 1000 $\ast$ 60 $\ast$ 60joue/sec $\ast$ sec

1KWh = 1000 $\ast$ 60 $\ast$ 60 joule

1KWh = 36,00,000 joule = 3.6 $\ast$ 10${}^6$