An electric bulb of $60\ W$ is lighted for $10\ hours$ everyday. How many units of electrical energy is consumed by this bulb in one day ?

As given, power of the bulb $P=60\ W$

Time $t=10\ hours$

Therefore, energy consumed by the bulb in a day$=P\times t$

$=60\ W\times 10\ hours$

$=600\ Watt-hour$

$=0.6\times 10^3\ Watt-hour$

$=0.6\ KWh$

Thus, the energy consumed by the electric bulb is  $0.6\ KWh$.

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Updated on: 10-Oct-2022

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