What happens if electricity is switched on?

When electricity is switched on, an electric current flows through the circuit, allowing energy to be transferred to devices connected to it. This can power appliances, lights, or machinery, enabling them to function. The flow of electricity is regulated by the circuit's design and components, ensuring that the right amount of power reaches each device. If there are any faults, such as short circuits, it can lead to malfunctions or electrical hazards.