Question

An electric fan of power rating 110W operates for 10 hours daily in the month of June. How many units of electrical does it consume in the whole month.

Answer 1

Answer:

If power of electric fan is 110W for 10 hours

so, to find electric power in 1 hour =11W

so,1 day = 24 hours

24X11=264W in one day.

so, in 1 month = 30days (June)

ans-

7920W in one month

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Answer 2

Answer: Given:

Power = 60W

Time = 10 hours per day

One unit (kWh) = Rs. 3.50

Find:

Total amount to be paid in a month of 30 days

Solution:

We know that

Energy = power*time

Energy = 60*10 = 600Wh per day

Now total amount of energy required for 30 days will be

= 600*30 = 18000Wh = 18kWh per month

We have given that cost of 1kWh = Rs. 3.50

therefore, total amount to be paid in a month of 30 days will be

= 18*3.50

= 63 rupee per month