Question

In electrical geyser of 1.5k watt work for 2 hours . Find electrical energy consumed per day

Answer 1

This is just a conversion of units…

200W = 0.2kW

30min = 0.5h

0.2kW*0.5h = 0.1kWh

As a common-sense check, notice that the final units of kWh makes sense, because we literally multiplied kilowatts and hours, meaning the units get multiplied together, since no other conversions are taking place