An electric heater of power 220W is connected to 220V supply. Calculate the current, its resistance and cost of using it for 5 hours daily for 30 days at the rate of ₹2.40 per unit.
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Power = VI
Power = VI = 220 × 5 = 1100 watt
Power = VI = 220 × 5 = 1100 watt = 1.1 kw
Power = VI = 220 × 5 = 1100 watt = 1.1 kwCost per hour = 1.1 × 6
Power = VI = 220 × 5 = 1100 watt = 1.1 kwCost per hour = 1.1 × 6 = 6.6
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