An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________?
Correct answer: A. 12
- A. 12
- B. 24
- C. 5
- D. 1100
Explanation
The energy consumed is E = Pt = 500 W x 24 h = 12000 Wh = 12 kWh, so the answer is 12 units of electrical energy. Option b, 24, results from using only the time and ignoring the appliance's 500 W power rating.
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