An electric heater of 1500 watt is switched on for 10 hours. The electric energy consumed by the heater
is
A) 7 5.4 10 J B) 7 3.6 10 J C) 7 1.8 10 J D) 7 0.9 10 J
Answers
Answered by
0
Answer:
Energy consumed by an electric heater can be obtained with the help of the expression, P= W/T
Where,
Power rating of the heater (P) = 1500
W = 1.5 kW = 1500 W
Time for which the heater has operated (T) = 10 h
Work done = Energy consumed by the heater
∴ Energy consumed = Power × Time
Energy consumed = 1500 × 10
Energy consumed = 15000 W
Hence, the energy consumed by the heater in 10 h is 15 kWh.
Similar questions