Chapter - 4 Work and Energy

Q&A -Ask Doubts and Get Answers

Q
Work and Energy

Question:

A certain household has consumed 250 units of energy during a month. How much energy is this in joules? 

Answer:

We know, 1 unit is equal to the 1 kilowatt hour (kWh).

1 unit = 1 kWh

And, 

1 kWh = 3.6 	imes 10^6 J

Therefore,

250 units = 250 kWh = 250 	imes 3.6 	imes 10^6 J = 9 	imes 10^8 J

 


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