1.

In a house, 5 CF lamps each of 20 W, works for 4hours, 4 fans each of 60 W work for 5 hours and a TV of 100 W works for 4 hours in a day. What will be the daily consumption shown by the watt-hour meter?

Answer»

4 hour’s consumption of 5 CFL having 20 W.

\(\cfrac{5 \times 20\, \times\, 4}{1000}= 0.4\) kWh

5 hour’s consumption of 4 Fan having 60 W

\(\cfrac{4 \times 60\, \times\, 5}{1000}= 1.2\) kWh

4 hour’s consumption of one T.V having 100 W

\(\cfrac{1 \times 100\, \times\, 4}{1000}= 0.4\) kWh

Total unit = 2 kWh



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