An electric lamp of 100 watts is used for 10 hours in a day. How many units of energy is used by the lamp in a day?
An electric lamp of 100 watts used for 10 hours in a day consumes 1 kilowatt hour (kWh) of energy, which is equivalent to 1 unit of energy. This is calculated by converting the total watt-hours into kilowatt-hours.
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