how to calculate for the electric bill?
we have a project in our school and our teacher asked us to calculate for our electric bill. .first is to list down all the appliances that you use(including lights) then look at their wattage. then look for the bill of your supplier to see how much a kilowatt hour cost. .but i dont know how to calculate it. for example. .if a 10w light is switched on for 600 hours in 30 days. .how much will that cost? pls help me. .thanks.
You change the power from W to kW : 10W = 10/1000 kW = 0.01kW
You take time of consumption in hours.
Multiply power X time of consumption to get KW-h for the appliance.
Do the same for all appliances
Add up to find total KW-h.
Multiply total KW-h X Rate ( as applicable in your part of the world).
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