An electric heater is rated 1500 W. Then the work done by it in an hour is
a) 150 J
b) 15000 J
c) 54 x 10 hole power 5J
d) 54 x 10 hole power 6J
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An electric heater is rated 1500 W. Then the work done by it in an hour is
a) 150 J
b) 15000 J
c) 54 x 10 hole power 5J
d) 54 x 10 hole power 6J
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Answer:
15000
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 Time for which the heater has operated, T= 10 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 10 h is 15 kWh.
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