What is the purpose of a junction box in electrical systems?

The purpose of a junction box in electrical systems is to safely house and protect electrical connections. This enclosure provides a safe environment for wiring and connections, preventing exposure to moisture, dust, and physical damage that could lead to short circuits or other electrical hazards. Junction boxes are also critical for organizing wires, making maintenance and troubleshooting easier since they allow for clear access to electrical connections. This safety feature is particularly important in residential and commercial installations to comply with electrical codes and ensure user safety.

While other options mention elements related to electrical performance, such as current transmission, resistance, and energy efficiency, they do not accurately reflect the primary function of a junction box. The junction box's main role is protection and safety for the connections it contains.