Question

an electric heater of 500 watt 200 volt is operated with 100 volt supply for 2 hrs for 6 days calculate electric energy in commercial unit of electric energy​

Answer 1

Answer:

I = 2.5A

Energy consumed in 6-Days = 21600kwh

Explanation:

Power = 500w

Potential = 200v

Power = $VI$

    $500$ = $200 I$

       $I = \frac{500}{200}$

       $I = 2.5$A

Energy(1-DAY) = $VIT$

                        = 200×2.5×120×60

                        =2×25×12×6×1000

                        =  50×72×1000

                        = 3600×1000

                        = 3600$KWH$

Energy(6-DAYS) = Energy(1-DAY)×6

                           = 3600×6

                          = 21600$KWH$