Multiple choice

A current of 4 amp from 250 V source flow through an electric iron for 2 hours. The energy consumed will be

  1. 1 Kwh

  2. 4 Kwh

  3. 1.5 Kwh

  4. 2 Kwh
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Energy consumed = Voltage × Current × Time = 250V × 4A × 2 hours = 2000 Wh = 2 kWh. Using the formula E = VIT, we calculate the energy in watt-hours and convert to kilowatt-hours by dividing by 1000. Option D (2 kWh) is the correct answer. The other options (1, 1.5, and 4 kWh) don't match this calculation.

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