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00:00Question says, which one is the biggest unit of energy, A. Erg, B. Joule, C. Watt-Hour,
00:17D. Kilowatt-Hour is 1 kilowatt-hour is equal to 3.6 into 10 raised power 6 Joule, means
00:301 kilowatt-hour is equal to 3.6 megajoule. So, kilowatt-hour is the biggest unit of energy.
00:41So, the correct option will be D kilowatt-hour.
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