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(A) The $SI$ unit of energy is the Joule $(J)$. However,for commercial and practical purposes,the electrical energy consumed is measured in a larger u

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Kilowatt-hour

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(A) The $SI$ unit of energy is the Joule $(J)$. However,for commercial and practical purposes,the electrical energy consumed is measured in a larger unit called the Kilowatt-hour $(kWh)$.$1 \ kWh$ is defined as the amount of electrical energy consumed by an appliance of $1 \ kW$ power rating when used for $1 \ hour$.Therefore,the practical unit for electrical energy is the Kilowatt-hour $(kWh)$.

What is the practical unit used for electrical energy?

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