AFOQT Practice Test

What forms a complete path for electric charges to flow?

1. Electric power source

2. Insulated circuit

3. Electric circuit

4. Magnetic circuit

The correct answer is: Electric circuit

A complete path for electric charges to flow is referred to as an electric circuit. An electric circuit is essentially a closed loop that allows current to travel and perform work such as powering a light bulb or a motor. This circuit typically includes a power source, such as a battery or generator, along with conductive paths (like wires) that connect various components. In contrast, an insulated circuit cannot facilitate the flow of electric charges since insulation prevents electrical conductivity. An electric power source, while essential for initiating flow, does not constitute a complete path by itself. Similarly, a magnetic circuit involves the flow of magnetic fields rather than electrical current and does not provide the complete loop necessary for electric charges. Therefore, the correct answer highlights the concept of an electric circuit as integral to the flow of electric charges.