Question -
Answer -
With the help of the expression, energy consumed by an electric heater will be obtained,
P = T
Where,
Power rating of the heater,
P = 500 W = 1.5 power unit Time that the heater has operated,
T = ten h Work done = Energy consumed by the heater
Therefore, energy consumed = Power × Time
= 1.5 × 10 = 15 kWh
Hence, the energy consumed by the heater in 10h is 15 kWh.