(a) Define the commercial unit of electrical energy called the kilowatt-hour (kWh).…
PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity
Problem
(a) Define the commercial unit of electrical energy called the kilowatt-hour (kWh).
(b) Starting from the definition of electrical power as the rate of doing electrical work, show that one kilowatt-hour of energy is equal to 3.6×106J.
(c) State any two reasons why the kilowatt-hour is used on household electricity bills instead of the joule.