How does a Ground Fault Circuit Interrupter (GFCI) protect individuals from electrical hazards?

A Ground Fault Circuit Interrupter (GFCI) is designed to protect individuals from electrical hazards primarily by detecting current leakage and interrupting electrical flow. The device continuously monitors the electrical current flowing through a circuit and compares the incoming current to the outgoing current. If it detects any imbalance—indicating that the current may be leaking through an unintended path, such as through water or a person—it will quickly disconnect power to the circuit. This rapid action helps reduce the risk of electric shock or electrocution in environments where moisture is present, such as bathrooms, kitchens, or outdoor locations.

The other options describe functions that are not associated with a GFCI. Increasing current flow or allowing for higher voltage usage does not enhance safety and does not represent the protective mechanism that a GFCI employs. Similarly, while a GFCI may be installed in outlets to add safety, its primary role is not to provide extra electrical outlets, but to safeguard against electrical shock by minimizing the dangers associated with ground faults.