Question

In a house a tube light oc power 40 watt works for 10 hours per day, an electric fan of power 80 watt works for 6 hours per day, an Air conditioner of 200 watt works for 2 hours per day. Calculate the electricity bill of the house at the month of November at the rate ₹10 per unit.

please answer fast

Answer 1

Answer:

Power consumed by 1 tube light=40W

Power consumed by 4 tube lights=4×40=160W=0.16kW

Energy consumed by 4 tube lights each day =0.16 kW×5 h=0.8kWh

Power consumed by 1 fan =120W

Power consumed by 3 fans =3×120=360W=0.36kW

Energy consumed by 3 fans each day =0.36 kW×4 h=1.44kWh

Total electrical energy consumed per day =0.8+1.44=2.24kWh

∴ Total number of units consumed per day =2.24units

Cost of one unit=Rs.5/unit

Number of days in the month of September=30 days

∴ Electricity bill for the month of September=2.24 units×5 Rs./unit×30=Rs.336