An electric heater draws a a current of 10A from a 220 V supply .What is the cost of using the heater for 5 hours everyday for 30 dats if the cost of 1 unit (1 kWh)is 60 paise(indian currency)
Cost=Powerused*time*costperunit.
watch your units.
To calculate the cost of using the electric heater, we need to determine the total energy consumed by the heater over the given time period and then calculate the cost based on the unit rate.
First, let's calculate the energy consumed by the heater in kilowatt-hours (kWh) over the 30-day period:
Energy consumed per day = Power (in kilowatts) x time (in hours)
Power = current x voltage
Power = 10A x 220V = 2200W = 2.2kW
Energy consumed per day = 2.2kW x 5 hours = 11kWh
Total energy consumed over 30 days = Energy consumed per day x number of days
Total energy consumed over 30 days = 11kWh x 30 days = 330kWh
Now, we can calculate the cost of using the electric heater:
Cost = Total energy consumed x cost per unit
Cost = 330kWh x 0.60 INR (since 1 unit = 1kWh)
Therefore, the cost of using the heater for 5 hours everyday for 30 days is:
Cost = 330 x 0.60 = 198 INR
Hence, the cost of using the electric heater is 198 Indian Rupees.