1
Question
in a household, an electric bulbs of 100 w is used for 10 hours and an electric heater of l000 w for 2 hours everday. calculate the cost of using the bulb and the heater of 30 days if the cost of one unit of electrical energy is two rupees.
in a household, an electric bulbs of 100 w is used for 10 hours and an electric heater of l000 w for 2 hours everday. calculate the cost of using the bulb and the heater of 30 days if the cost of one unit of electrical energy is two rupees.
Open in App
Solution
Energy = Power x Time
Energy consumed by the bulb in one day = 100W x 10 hr = 1000 Wh = 1kWh
Energy consumed by the heater in one day= 1000 W x 2 hr = 2kWh
Total energy consumed in one month(30 days) = (1 + 2) x 30 = 90 kWh
Cost of one unit = Rs. 2
Cost of 90 units = Rs. 180
Energy = Power x Time
Energy consumed by the bulb in one day = 100W x 10 hr = 1000 Wh = 1kWh
Energy consumed by the heater in one day= 1000 W x 2 hr = 2kWh
Total energy consumed in one month(30 days) = (1 + 2) x 30 = 90 kWh
Cost of one unit = Rs. 2
Cost of 90 units = Rs. 180
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
