Question

An electric heater of 20 W and a fan of 150 W is connected parallely to a 240 V DC supply. Calculate the total current and total energy consumed daily if the heater and the fan is used for a duration of 6 hrs and 8 hrs daily​

Answer 1

Answer:

Energy = Power*time

Energy consumed by 100 W bulb per day = 2∗100 Wh               

                                                                      = 0.2 kWh

Energy consumed by 40 W bulbs per day = 4∗40∗4 Wh

                                                                      = 0.64 kWh

Total energy consumed per day = 0.2 + 0.64 kWh

                                                   = 0.84 kWh 

Therefore, the energy consumed in 30 days = 30∗0.84 kWh

                                                                                    = 25.2 kWh