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Doctors Medicines MCQs Q&A

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

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2 Answers

We know that 

                          1 unit = 3,600,000 J 

So,                     250 units = 250 × 3,600,000 J 

                                          = 900,000,000 J 

                                          = 9 × 108 J 

Hence, the energy consumed = 9 × 108 J  

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Energy consumed w = 250 units
= 250 kwh
= 250 × 1000 W × 3600 S
= 250 × 1000 J/S × 3600 S
= 9 × 108 J.

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