Question

6(c). Name and define the standard commercial unit of electric energy

Answer 1

Definition of electric energy:

“The product of power and time i.e. electric energy consumed by an electric appliance or the amount of work done is termed as electric energy.”

Standard commercial unit of electric energy:

1. This is the expression of electric energy,$E=VIt$
2. Kilo-watt-Hour ($1$$KwH$) is the standard commercial unit of electric energy.
3. Kilo-watt-Hour ($1$$KwH$) is the amount of electrical power ate up when electrical equipment having a strength rating of $1$ kilowatt is used for $1$ hour.