What happens when a circuit is opened at a switch?

When a circuit is opened at a switch, the current flow is interrupted. This means that the path for electric current is broken, which prevents electricity from flowing through the circuit. When the switch is open, devices that rely on that circuit for power will cease to operate because they are no longer receiving electrical energy.

This is a fundamental principle of electrical circuits; a closed circuit allows current to flow, while an open circuit stops it. Understanding this concept is crucial for anyone working with electricity, as it affects how devices are controlled and how they operate within different configurations of electrical systems.