Answer:
Step-by-step explanation:
Electricity is delivered to consumers through a complex network. Electricity is generated at power plants and moves through a complex system, sometimes called the grid, of electricity substations, transformers, and power lines that connect electricity producers and consumers.
The electricity used in homes, shops, hospitals and factories has to be transported large distances from power stations without energy being lost to the surroundings.
The power input for households is ac as the National Grid can only use ac input. This means that the direction of the current and voltage changes 100 times per second. The direction of a direct current (dc) voltage, such as that produced by a cell or a battery, does not change.