2.Calculate the electric energy consumed by a 1200Wtoaster in 20 minut – InterviewSolution

1.

2.Calculate the electric energy consumed by a 1200Wtoaster in 20 minutes.[CBSE 2009]

Answer»

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.

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