Q. 9.     A certain household has consumed 250 units of energy during a month. How much energy is this in joules?

Answers (1)

We know that 1 unit of energy is given by :                 1 unit  =  1 KWh.

   Also,                                           1\ KWh\ =\ 3.6\times 10^6\ J

Thus 250 units in joule is given by :

                                                 E\ =\ 250\times 3.6\times 10^6\ =\ 9\times 10^8\ J 

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