Turbines and Dynamos are used to convert which energy to electrical energy?

When electrical energy is converted into motion

The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to

A 100 W electric bulb is used for 10 hours a day. How many units of electrical energy are consumed by the bulb in 3 days ? (1 unit = 1 kWh)

Which one of the following is an electric conductor?

Ms. Rani decides to convert her AC generator into a DC generator. Which one of the following she would need to use?