In the house there are four bulbs of hundred watts each ,six fans of 60 watts each of them are used for two hours a day how many units of electricity will be used up in 30 days and How much will they have to pay at Rs 3.00
Answers
formula used = no. of days * no. of hours per day * power used *no. of components
Answer: We have to pay Rs = 136.8 Rs
Explanation : Power of bulb = 100 watts
power of fans = 60 watts
total power of bulb = 4×100 = 400 watts
total power of fans = 6×60 = 360 watts
time taken by bulb and fans in each days = 2 hour
total days used up = 30 days
energy consumed by electric bulb = power of the bulb× time
= 400 × 30× 2
= 24 kilowatt
energy consumed by electric fans = power of the fans× time
= 360 × 30× 2
= 21.6 kilowatt
total energy consumed by bulb and fans = energy consumed by bulb
+ energy consumed by fans
= 24 + 21.6
= 45.6 kilowatt
= 45.6 units
they have to pay at Rs 3.00 = 45.6 × 3
= 136.8 Rs