Question

radio of set of 60W runs for 50 hrs.how much electrical energy is consumed?

Answer 1

Energy consumed = power *time /1000
=60*50/1000
=3 units

Answer 2

Answer:

Solution :

We want to calculated the electrical energy in kilowatt-hours, so first we should convert the power of 60 watts into kilowatts by dividing it by 1000. That is : <br> Power, P =60 watts <br>

kilowatts <br> = 0.06 kW <br> And, Time, t = 50 h <br> Now, putting P = 0.06 kW and t = 50 h in formula: <br>

<br> We get :

<br> So, Energy consumed

<br> = 3 kWh <br> Thus, the electrical energy consumed is 3 kWh or 3 units.