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Question

An electric iron is rated at 750 W, 230 V. Calculate the electrical energy consumed by the iron in 16 hours.
  1. 12 kWh
  2. 43.2×106 J
  3. 120 kWh
  4. 4.32×106 J

A
120 kWh
B
12 kWh
C
4.32×106 J
D
43.2×106 J
Solution
Verified by Toppr

Energy consumed =750×16Wh=12000Wh=12kWh
Expressed in joule,
12kWh=12000×3600Ws=43.2×106J

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