calculate the cost of using 50 Watt energy saver 48 hours daily in your study room assume that the price of unit is Rs 12
Answers
Answer:
An electric bulb of 60W is lit for 10 hours a day, what is the amount to be paid in a month of 30 days, if one unit of electricity costs Rs. 3.50?
Given:-
Power= 60 Watt
Everyday Use = 10 Hours
Total Days= 30
Cost Of elctricity per unit= 3.50 Rs.
Find:-
Total amount to be paid in 30 days
Given:-
The days can be calculated in total hours used in 30 days
Hence, Days x Everyday Use = 30 x 10 = 300 Hours
Convert, 60 Watt into Kwatt = 60/1000
By Formula,
Unit= Kwatt x Time (in hours)
U= 60/1000 x 300
U= 18
Hence, total unit used is 18.
By Formula,
Cost= Unit x Rupees per unit
Cost= 18 x 3.50
Cost= 63 Rupees
Therefore, the amount to pay in 30 days is 63 Rupees.
1 kwh = 1000 W
Bulb Rating =60 W = .06 kW
Bulb illuminates for = 10hrs/day
Bulb consumes units( kWH)/day= .06×10= .6kWH/ day = .6 units/ day
In 30 days = .6×30 = 18units
1 unit cost = 3.50/-
12 units cost = 3.50×18 = 63/-
Therfere Rs.63/- has to be paid in a month