1.

i. An electric heater of 500 W operates 12hr/days. What is the cost of the energy to operate it for 30 daysat 4 rupees per kWh?ii State loules laww of Heating

Answer»

Load=500 watt.

Running hours per day= 12 hours

Daily consumption= 12 X 500= 6000 watt hour or 6 Kwh

Rate per unit= 4 Rs.

Daily Cost = 6 X 4 = 24 Rs.

Monthly Cost= 24 X 30 = 720 Rs



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