Question

What will be the cost if a T.V. set is run 20 Hrs a week for the courses of four weeks. T.V. set is rated at 2 watt. (rate = Rs. 5 / K.W.H.)​

Answer 1

Answer:

TV Rated= 2 Watt

Which Means 2 Joule Per Second .

✔Energy Consumed in One Hour= Power* Time

= 2*3600 (1 Hour= 3600 Second)

Total Time TV Used is:- 20 Hours in a Week For 4 Weeks, Which Means:- 20*4= 80 Hours

Hence, Total Energy Consumed:- 2*3600*80=576000 Joule

As We Know That

1 K.W.H. = 3.6*10^6 Joule

~ 576000/3.6*10^6 =0.16 KWH

Hence, Total Rate/Light Bill= 0.16*5 (Rs.5 / KWH)

Ans=0.8✔

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