Question

if an electric bulb has a rating 200 watt, 220 volt and if it is used for 5 hours daily for 10 days, calculate the cost of using the bulb at 40 paise per kWh.

Answer 1

this is the answer
hope it helps : )

Answer 2

Answer:

Power = 200 W

         = 200/1000 KW

Time = 5 hrs for 10 days

         = 5 x 10 hrs

Total Energy consumed = power x time taken

                                      = 200/1000 x 5 x 10

                                      = 10 KWh

Total cost = total energy consumed x cost per KWh

               =  Rs. 10 x 0.4

               =  Rs. 4

HOPE THIS HELPS YOU???????