Find the energy in $kWh$ consumed in $10$ hours by a machine of power $500\ W$.

Power of the machine $P=500\ W$

Time taken to consume the energy $t=10\ hours$

Therefore, energy consumed by the machine $W=P\times t$

$=500\ W\times10\ hour$

$=5000\ Wh$

$=\frac{5000}{1000}\ kWh$      [Because $1\  kWh=1000\ Wh$]

$=5\  kWh$

Thus, the energy consumed by the machine $5\ kWh$

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Updated on: 10-Oct-2022

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