Define unit of electric energy?

What is the commercial unit of electric energy? Obtain the relation between this unit and the SI unit of energy.

Write commercial and SI units of energy. Calculate the cost of electric energy consumed by an electric heater rated with 50 W used for 2 hours daily in the month of April. The cost of one unit of electric energy is Rs. 5.

Explain electric energy. Give the various relations of electric energy and define the commercial unit of electric energy .

State the commercial unit of electric energy.

(a) Define 1 watt. (b) State the commercial unit of electric energy. Express it in terms of SI unit of energy. (c) An electric refrigerator rated as 750 W operates 8 hours per day. What is the cost of the energy to operate it for the month of June at Rs. 2.50 per kWh ?

What is the commercial unit of electrical energy ? Represent it in terms of joules.