a bulb of 100W operates for 6 hours a day . find the unit of energy consumed in 7 days.
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Given:
P=100W
T per day =6 hrs
To find:
power consumption of bulb in 7 days
Soln:
Power consumed by bulb in 1 day=100×6
=600 W hrs
SINCE,1W hrs = 1000Kwh
Power consumed by bulb in 1 day=600÷1000kWh
=3/5 kWh
Therefore,power consumed by bulb in 7 days
=3/5×7
=21÷5
=4.2kWh
P=100W
T per day =6 hrs
To find:
power consumption of bulb in 7 days
Soln:
Power consumed by bulb in 1 day=100×6
=600 W hrs
SINCE,1W hrs = 1000Kwh
Power consumed by bulb in 1 day=600÷1000kWh
=3/5 kWh
Therefore,power consumed by bulb in 7 days
=3/5×7
=21÷5
=4.2kWh
atharva13:
hope so it is correct ☺
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