Q. 244.2( 13 Votes )

Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt hours.

Answer :

Given,

Power = 120 watts = 0.12 kW;


Time, t = 4 hr


Hence, the energy consumed by one fan = P × t


= 0.12 × 4


= 0.48 KWh


Hence, the energy consumed by 5 fans,


= 0.48 x 5


=2.4 kWh


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Let's Calculate Workdone by a BodyLet's Calculate Workdone by a BodyLet's Calculate Workdone by a Body42 mins
Foundation | Let us Understand Law of Conservation of EnergyFoundation | Let us Understand Law of Conservation of EnergyFoundation | Let us Understand Law of Conservation of Energy44 mins
Foundation | Rapid Fire QuizFoundation | Rapid Fire QuizFoundation | Rapid Fire Quiz36 mins
Introduction to WorkIntroduction to WorkIntroduction to Work40 mins
Conservation of Mass-EnergyConservation of Mass-EnergyConservation of Mass-Energy41 mins
How Does Barometer Work?How Does Barometer Work?How Does Barometer Work?36 mins
Cell Organelles of Energy MetabolismCell Organelles of Energy MetabolismCell Organelles of Energy Metabolism49 mins
Champ Quiz |  2-Dimension( Coordinate geometry )Champ Quiz |  2-Dimension( Coordinate geometry )Champ Quiz | 2-Dimension( Coordinate geometry )36 mins
Matter and Its ClassificationMatter and Its ClassificationMatter and Its Classification34 mins
Speed and VelocitySpeed and VelocitySpeed and Velocity59 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses