An electric heater rated as 220 V and 5A .
Calculate the amount of power consumed by the heater and also
cost of using the heater for one hour if the cost of one unit is Rs 2.

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Solution

power P=VI
given V=220
I=5
so P=2205=1100WATT
=1.1KW
so cost per hour=Pcost for 1 unit
=1.1*2
=2.2rs.

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