1 kilowatt hour is the amount of electric energy consumed when 1 kilowatt power is used for 1 hour in an electric circuit. Express it in joules.

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RRB ALP CBT I 30 Aug 2018 Shift 3 Official Paper
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  1. 6.3 × 105 J
  2. 6.3 × 106 J
  3. 4.6 × 106 J
  4. 3.6 × 106 J

Answer (Detailed Solution Below)

Option 4 : 3.6 × 106 J
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Detailed Solution

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The relationship between kilowatt-hours (kWh) and joules (J) is:

1 kWh = 1000 W x 1 hour = 1000 J/s x 3600 s = 3,600,000 J

Therefore, the answer is:3.6 × 10^6 J
So, 1 kilowatt hour is equivalent to 3.6 million joules (J).

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