An electric bulb of 100 W is used for 6 hours per day. Calculate the ‘units’ of energy consumed in one day by the bulb.

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0.4 units

0.2 units

0.30 units

0.6 units

answer is D.

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Detailed Solution

Power of electric bulb = 100 W = 0.1 kW.

Time used, t = 6 h

Energy = power × time taken

Energy = 0.1 kW × 6 h

Energy = 0. 6kW h

Energy = 0.6 units

The energy consumed by the bulb is 0.6 units.

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