What condition allows electricity to flow through a circuit?

Electricity flows through a circuit when there is a complete path for the electric current to travel. A closed switch creates that complete circuit, allowing the flow of electricity. When the switch is closed, it connects the electrical contacts, effectively permitting electrons to move from the power source to the load (like a light bulb or appliance), forming a continuous loop. This is fundamental in electrical systems, as an open switch would break the circuit, disconnecting the flow of electricity.

In contrast, an open switch interrupts the path, preventing current from flowing. A disconnected circuit lacks continuity altogether, rendering it ineffective for electricity flow. Faulty wiring can create various issues, including short circuits or unintended disconnections, but it generally doesn't establish a reliable path for current. Therefore, a closed switch is essential for electricity to flow effectively in a circuit.