Akudu has five 60W bulbs and two 240W water heater in his apartment. If the bulbs and water heater are switched on for 3 hours daily and the cost of electricity in 40 Kobo per kilowatt-hour calculate his bill for 100 days.
karthik123654987:
"Kobo" means ?
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Electricity, or rather electrical energy costs money. We pay for it when we buy a battery and we pay the electricity board for the electricity that we use from the mains.
The average electricity bill for a house in a year would probably be about £500, although this very much depends on how the house is heated.
The electricity board measures the electrical energy that we use not in joules but in units called KILOWATT-HOURS
A kilowatt-hour (kWh) is the energy that a one kilowatt appliance uses in one hour
One kilowatt hour = 1000 W x 3600 s
= 1000 x 3600
= 3 600 000 J
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