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In a household, an electric bulb of 100W...

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 using bulb and heater for 30 days take the cost of one unit of electrical energy is 5 rupees.

Text Solution

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Energy consumed=power`xx`time
Energy consumed in 30 days will be=
=energy consumed by bulb (EI)+energy consumed by heater (E2)
E1=`100xx10xx30=30000Wh=30KWh`.
`E2=1000xx2xx30=60000Wh=60KWh`
Total energy consumed`=E1+E2=30+60=90KWh`
Cost of electrical energy `=5xx90=INR450`
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