Question

in a household,an electric bulb of 100W is used for 10 hours and an electric heater of 1000W is used for 2 hours .calculate the cost of bulb and the heater for 30 days.take the cost of one unit of electrical energy as 2 rupees

Answer 1

Energy used by heater =100wx(10hx30days) =30000wh =30unit

Energy used by bulbs =1000w(2h ×30days) =60kwh =60units

Total Energy = 60+30 =90Units

Cost =90×2 =180 rupees

Answer 2

Explanation:

answer for this question is attached in the answer

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