Question

what is the energy in what unit Board of trade unit
of 1000 watt heater working for 2 hours

Answer 1

Energy=Power x Time
            =1000W x 2hr
           =2000Wh
           =2kWh
therefore the units consumed are 2 units

Answer 2

According to BOT
1 kWh = 1 unit

Energy = Power × Time
= 1000 Watt × 2 hour
= 2000 Wh
= 2 kWh
= 2 units