calculate the electricity bill amount for a month of april, if 4 bulb of 40W for 5 hrs, 4 tube lights of 60W for 5 hrs, a TV of 100W for 6 hrs, a washing machine of 400W for 3 hrs are used per day. the cost per unit is 0.28 dhirhams.
Answers
Electric energy consumed per day by 4 bulbs = 4x40 x5 = 800Wh
Electric energy consumed per day by 4 lights = 4x60x5 =1200 Wh
Electric energy consumed per day by TV = 100x6 = 600 Wh
Electric energy consumed per day by washing machine = 400x3 =1200 Wh
.’. Total electric energy consumed by all electric appliances = (800+ 1200 + 600+ 1200)Wh = 3800 Wh = 3.8 kWh =3.8 units
Total electric energy consumed in the month of April (30 days) = 3.8 x 30 = 114units
Cost of one unit = Rs. 1.80
Cost of 114 units = 114 x 1.80 = X 205.20 .:. Electricity bill amount = Rs 205.20
Electric energy consumed per day by 4 bulbs = 4x40 x5 = 800Wh
Electric energy consumed per day by 4 lights = 4x60x5 =1200 Wh
Electric energy consumed per day by TV = 100x6 = 600 Wh
Electric energy consumed per day by washing machine = 400x3 =1200 Wh
.’. Total electric energy consumed by all electric appliances = (800+ 1200 + 600+ 1200)Wh = 3800 Wh = 3.8 kWh =3.8 units
Total electric energy consumed in the month of April (30 days) = 3.8 x 30 = 114units
Cost of one unit = Rs. 1.80
Cost of 114 units = 114 x 1.80 = X 205.20 .:. Electricity bill amount = Rs 205.20
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