Question

an electrical iron box having power 400w is operated in 10hours. what will be the energy consumed by the device in commercial unit?

Answer 1

4 kWh or 4 units

Step-by-step explanation:

energy = power × time

= 400 W× 10 h

= 4000 Wh

=( 4000/ 1000 ) kWh

= 4 kWh

= 4 commercial units