Which configuration best describes a basic electrical circuit?

Which configuration best describes a basic electrical circuit?

• A. A circuit that includes a power supply and a load connected by conductive wires
• B. A capacitor in isolation
• C. A resistor in isolation
• D. An open circuit with no path

Answer: (A)

A basic electrical circuit requires a closed loop that allows current to flow from a power source through a load and back to the source. The best description of a basic circuit is a power source connected to a load by conducting wires that form a complete, continuous path. This closed path lets electrons travel from the source, through the load, and return, delivering energy to the load. If you have a capacitor or a resistor by itself, there’s no complete circuit with a return path, so no current can flow. An open circuit also has a broken path, so there’s no current at all. The key idea is the complete loop that includes a source, conductors, and a load.

A basic electrical circuit requires a closed loop that allows current to flow from a power source through a load and back to the source. The best description of a basic circuit is a power source connected to a load by conducting wires that form a complete, continuous path. This closed path lets electrons travel from the source, through the load, and return, delivering energy to the load. If you have a capacitor or a resistor by itself, there’s no complete circuit with a return path, so no current can flow. An open circuit also has a broken path, so there’s no current at all. The key idea is the complete loop that includes a source, conductors, and a load.