A 100 watt electric bulb is used for 5 hours daily and four 60 watt bulbs are used for 5 hours daily. Calculate the energy consumed (in kWh) in the month of january.
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Answers
Answer:
The energy consumed in the month of January = 52.7
Explanation:
100 W = 100 joules per second 1 watt hours = 3600 joules The electric bulb is lighted for 5 hours daily, 100 W × 5 = 500 watt hours 500 watt hours = 1800000 joules 1 kWh = 3600000 joules Units consumed per day = 1800000360000018000003600000 = 0.5 units Untis consumed in month = 0.5 × 31 = 15.5 units …. (1) Now, Sum of power of four 60 watt bulbs = 240 W 240 W × 5 hours = 1200 watt hours 1200 watt hours = 4320000 joules Energy consumed per day =4320000360000043200003600000 = 1.2 units Energy consumed in a month = 1.2 × 31 = 37.2 units …. (2) Total energy consumed in a month = 15.5 + 37.2 = 52.7 units 1 unit = 1 kWh The energy consumed in the month of January = 52.7
Answer:
Ye raha sis aapka answer 52.7 kWh
Explanation:
Given:
A 100-watt bulb is used for 5 hours
four 60-watt bulbs are used for 5 hours
Energy used in kWh in 31 days
Now,
Power consumed by 4 bulbs of 60-watt = 4 × 60 = 240 watt
Power consumed by 4 bulbs in 5 hours = 240 × 5 = 1200 watt hours = 1200/1000 kWh = 1.2
Power consumed by a 100-watt bulb in 5 hours = 100 × 5 = 500/1000 kWh = 0.5 kWh
Now,
Total power consumed by both bulbs = 0.5 + 1.2 = 1.7 kWh
Total power consumed by both bulbs in 31 days = 1.7 × 31 = 52.7 kWh
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