How do GFCI outlets protect from electrocution?

GFCI (Ground Fault Circuit Interrupter) outlets protect against electrocution by monitoring the electrical current flowing through a circuit. If the GFCI detects any imbalance between the outgoing and returning current, which can occur if electricity is leaking to the ground (such as through a person), it quickly shuts off the power within milliseconds. This rapid interruption helps prevent serious electric shocks or electrocution, particularly in wet areas like kitchens and bathrooms where the risk is higher.