Answer:

First, Power plants generate electricity. Electrical energy is generated at the power station (also referred to as power plant) by huge generator. Second, Transformer step up voltage for transmission. The current generated from power plants is sent through transformers to increase the voltage. Third, Transmission lines carry electricity over long distances. Transmission is the movement of electricity from a generating site to a substation where it is distributed to homes. Then, Neighborhood transformer step down voltage. Voltage is lowered in preparation for distribution to households. Distribution substation uses a smaller step down transformer to decrease the voltage so that it can be sent through distribution poles. Next, Distribution lines carry electricity to house. Electricity travels through small transmission lines called distribution lines toward your home but Pole transformer step down electricity before it enters home. A small transformer mounted on a distribution pole further reduces the voltage to 110-220V. This is done to ensure that only 220 V goes into our homes.

A service drop wire provides path for the power from the distribution pole to the house. In the house, the control panel distributes power through wires in the walls and through a meter that measures the amount of electrical energy used.

If we plug-in our appliances, we complete a circuit powered by the power plant, thereby making the lights and appliances work.