how to calculate electrical bill of your home

                             

let us suppose your home load(fan,bulb etc) connected to the main supply , remain on during the following hours .

Time                 No                       Power                            Name

6pm to 12am           1                               1000w(1kw)                             Air conditioner 

6am to 10am           1                               2000w(2kw)                             washing machine 

6am to 9am             5                               100w( 5*100w =1kw)               bulb

   

                        Now the total unit consumed in the given hours will be 

                        E = 1 kw*6 hour + 2 kw*4 hour + 1 kw*3 hour =17kwh = 17 units 

if the electrical unit supply to you, by an electrical company at a rate of 2$/unit, then your exist electrical bills during the above hour will be 17 units*2$ = 34$ daily 

and your electrical bill for the whole month will be 17 units* 2$* 30 days = 1020$/months