Question

CALCULATE THE ENERGY CONSUMED BY 120W TOASTER IN 20 MINUTES

Answer 1

Hi friend, Here is the required answer:-

I have denoted the symbols of quantities in front of their names.

Power P= 120 Watt

Time t= 20 minutes= 20× 60 s= 1200 seconds

We know that,

Power P = Work W ( or Energy E)/ Time taken t

Then, Energy E= Power P × Time t

So, Energy E= 120 W× 1200= 144000 J or 144 KJ.

Hope this helps you...

Answer 2

Power = 120W, Time = 20 mins = 1200 sec, Energy =?

Energy = Power*Time
= 120*1200
= 144000 Joules
= 144 Kilo Joules

So, the energy consumed by the toaster is 144 Kilo Joules.

Hope this helps you!!