an electric heater is rated 1800w.How much energy does it use in 12 hours
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Answered by
0
Answer:
energy = power × time
=1800×12×60×60
= 7775kilojoul
Answered by
0
answer
15kwh
Step-by-step explanation:
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.
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