Asked by nitz

If electrical energy cost 5.00 per kilowatt hour, what will be the daily cost of using a 50 watt bulb for 4 hours a day when connected across a 220 volt source?,
help please!
Answered by bobpursley
cost=power*time*cost/time
=50 watts*4hrs*5cents?/KilowattHr*1kw/1000watts.

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