Question

an electric heater is used on and 220 volt supply and takes a current of 5 ampere what is its power what is the cost of using the heater for one hour if one kilowatt hour cost 50paise​

Answer 1

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Answer 2

here, v=220 volt

I=5 A

so power ,p= v×I

p= 220×5

p=1100watt

1watt=1/1000 kilowatt

then 1100watt =1100/1000

=1.1 k W

now, 1kWh=50 paise

then. 1.1kWh =50×1.1=55paise

hope it helps you. ...