Question

1 kWh is equal to

• A. $3.6\times {10}^{6}MJ$
• B. $3.6\times {10}^{5}MJ$
• C. $3.6\times {10}^{2}MJ$
• D. $3.6MJ$

Answer 1

The correct option is D $3.6MJ$

1 kilowatt hour is the energy produced by 1 kilowatt power source in 1 hour.

$1kWh=1kW\times 1hour=1000\times 3600W.s$

$⟹1kWh=3.6\times {10}^{6}J$

$⟹1kWh=3.6MJ$

Answer-(D)