1.

An electric heater is used on 220 V supply and takes a current of 5A. What is ita power ? Calculate the per hour cost of using the beater if 1 unit costs Rs 6.0.

Answer»

Solution :POWER =VI
`=220 xx5=1100 ` Watt
`=1.1 kW`
COST PER hour = `1.1xx6`
`= ₹ 6.6 `


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