Does electricity flow through burnt-out bulbs?

Electricity does not flow through burnt-out bulbs because the filament inside the bulb has broken, creating an open circuit. In an open circuit, the flow of electric current is interrupted, preventing electricity from passing through.

A voltmeter, which is designed to measure voltage, can indeed be used to test the voltage at the terminals of the burnt-out bulb. It does not require the circuit to be complete to measure potential difference; it can essentially "bypass" the broken filament to provide a reading of the voltage present, if any, in the circuit.

This choice correctly reflects the interaction of electricity with a non-functional bulb. The other options suggest scenarios that do not accurately represent the behavior of electrical circuits involving burnt-out bulbs, reinforcing why this is the correct understanding.