Q. In a house hold four 60 W electric bulbs are lighted for
2 hours and two 100 W bulbs are lighted for 4 hours
every day. Calculate the energy consumed in the house
for 30 day. Calculate the electricity bill if it is charged as
5.60 per kWh.
Answers
Explanation:
We Have :-
Four 60 W electric bulbs are lighted for 2 hours
Two 100 W bulbs are lighted for 4 hours
To Find :-
Energy consumed in the house for 30 day
Calculate the electricity bill if it is charged as 5.60 per kWh.
Formula Used :-
Energy = Power × Time
Solution :-
For 60 W bulbs :-
Power = 60 W
Time = 2 hours
Energy = 60 × 2
= 120 Wh
There are 4 bulbs :-
120 × 4
480 Wh
Day :-
1 Day = 480 Wh
30 Days = 480 × 30
= 14400 Wh
Convert to kWh :-
1000 Wh = 1 kWh
14400 Wh = 14400 / 1000
= 14.4 kWh
For 100 W bulbs :-
Power = 100 W
Time = 4 hours
Energy = 100 × 4
= 400 Wh
There are 2 bulbs :-
400 × 2
800 Wh
Day :-
1 Day = 800 Wh
30 Days = 800 × 30
= 24000 Wh
Convert to kWh :-
1000 Wh = 1 kWh
24000 Wh = 24000 / 1000
= 24 kWh
Total Energy used :-
14.4 + 24
38.4 kWh
Bill :-
1 kWh = Rs 5.60
38.4 kWh = Rs 5.60 × 38.4
= Rs 215.04
Answer:
For 60 W bulbs :-
Power = 60 W
Time = 2 hours
Energy = 60 × 2
= 120 Wh
There are 4 bulbs :-
120 × 4
480 Wh
Day :-
1 Day = 480 Wh
30 Days = 480 × 30
= 14400 Wh
Convert to kWh :-
1000 Wh = 1 kWh
14400 Wh = 14400 / 1000
= 14.4 kWh
For 100 W bulbs :-
Power = 100 W
Time = 4 hours
Energy = 100 × 4
= 400 Wh
There are 2 bulbs :-
400 × 2
800 Wh
Day :-
1 Day = 800 Wh
30 Days = 800 × 30
= 24000 Wh
Convert to kWh :-
1000 Wh = 1 kWh
24000 Wh = 24000 / 1000
= 24 kWh
Total Energy used :-
14.4 + 24
38.4 kWh
Bill :-
1 kWh = Rs 5.60
38.4 kWh = Rs 5.60 × 38.4
= Rs 215.04
Explanation: