when a 100 w bulb is burnt for 4 hrs ,a 1500 heater is used for 2 hrs per day.find the energy consumed per day and the cost of electricity in a month of 30 days . cost per unit is rs. 2.5 .

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Solution

Dear Student

Energy consumed by bulb in a day = 100 x 4 = 400 Watt/hr
Energy consumed by heater in a day = 1500 x 2 = 3000 Watt/hr

Total Energy consumed in a day = 400 + 3000 = 3400 Watt/hr

Net cost per day = 3400 x 2.5 = Rs. 8500
Net cost for 30 days = 30 x 8500= Rs. 255000

Regards

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when a 100 w bulb is burnt for 4 hrs ,a 1500 heater is used for 2 hrs per day.find the energy consumed per day and the cost of electricity in a month of 30 days . cost per unit is rs. 2.5 .

Dear Student Energy consumed by bulb in a day = 100 x 4 = 400 Watt/hr Energy consumed by heater in a day = 1500 x 2 = 3000 Watt/hr Total Energy consumed in a day = 400 + 3000 = 3400 Watt/hr Net cost per day = 3400 x 2.5 = Rs. 8500 Net cost for 30 days = 30 x 8500= Rs. 255000 Regards

Dear Student

Energy consumed by bulb in a day = 100 x 4 = 400 Watt/hr
Energy consumed by heater in a day = 1500 x 2 = 3000 Watt/hr

Total Energy consumed in a day = 400 + 3000 = 3400 Watt/hr

Net cost per day = 3400 x 2.5 = Rs. 8500
Net cost for 30 days = 30 x 8500= Rs. 255000

Regards