A 100 watt electric bulb is lighted for 2 hours daily and 540 watts tubes are lighted for 4 hours daily. calculate:
1) the energy consumed for 60 days?
2) cost of electricity consumed at the rate of rs 3 /kwh?

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Solution

Dear Student

Energy of 100 W bulb=Power×Time =100×2 =200 Whr

Energy of 40 W bulb 2 = 4×40×4 =640 Whr
Total energy consumed in one day=200+640 = 840 Wh
Energy consumed in 60 days = 840×30 =25200 Wh = 25.2 kWH

Cost of electricity consumed = 3 x 25.2 = 75.6Rs

Regards

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A 100 watt electric bulb is lighted for 2 hours daily and 540 watts tubes are lighted for 4 hours daily. calculate: 1) the energy consumed for 60 days? 2) cost of electricity consumed at the rate of rs 3 /kwh?

Dear Student Energy of 100 W bulb=Power×Time =100×2 =200 Whr Energy of 40 W bulb 2 = 4×40×4 =640 Whr Total energy consumed in one day=200+640 = 840 Wh Energy consumed in 60 days = 840×30 =25200 Wh = 25.2 kWH Cost of electricity consumed = 3 x 25.2 = 75.6Rs Regards ​

A 100 watt electric bulb is lighted for 2 hours daily and 540 watts tubes are lighted for 4 hours daily. calculate:
1) the energy consumed for 60 days?
2) cost of electricity consumed at the rate of rs 3 /kwh?

Dear Student

Energy of 100 W bulb=Power×Time =100×2 =200 Whr

Energy of 40 W bulb 2 = 4×40×4 =640 Whr
Total energy consumed in one day=200+640 = 840 Wh
Energy consumed in 60 days = 840×30 =25200 Wh = 25.2 kWH

Cost of electricity consumed = 3 x 25.2 = 75.6Rs

Regards