List out the power rating of household appliances including air conditioners PCs laptops printers etc. Find the total power consumed.

9 b] List out the power rating of household appliances including air conditioners, PCs, laptops, printers, etc. Find the total power consumed.

Solution :

Power rating of household appliances :

The Power rating of the appliance is related the power it consumes. Every electrical appliance has a power rating which indicates the amount of electricity required to do work. . This is usually given in watts (W) or kilowatts (kW).
The Energy consumption of a device is calculated by multiplying the wattage of a device and operational hours

Energy consumption = Wattage X operational hours.

Calculation of Power consumption of electrical home appliances.

Let us consider different home appliances to calculate approximate total energy consumption of house per month.

SL NOAppliancesWattsNOTotal no of wattsNo of operational
hours per day
Total Energy consumed = No of watts X No of operation hoursEnergy consumed in kwh(unit) per day= energy consumed / 100
1Tube light60W1060053000
9Washing machine2000W12000120002
10Micro wave1000W11000110001
total no of units consumed per day18.9=19 Units
calculation of power consumption of electrical home appliances

Therefore per day 19 units of energy is consumed
For 1 month = 19 x 30 = 570 units per month

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