Question

An electric heater is rated 1500 W. Then the work done by it in an hour is
a) 150J
b) 15000 J
c) 54 x 10% J
d) 54 x 106J
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Answer 1

c

hope it's help you.....

Answer 2

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 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