A Ground Fault Circuit Interrupter (GFCI) works by comparing the amount of current going to and returning from equipment along the circuit conductors. When the amount going differs from the amount returning by approximately 5 milliamps, what does the GFCI do?

A. Interrupts the voltage

B. Interrupts the current

C. Shocks the individual

D. Destroys the electrical device

Interrupts the current (B)

Explanation:

The Ground fault circuit interrupter is integrated into the outlet of the electrical system in a building. its main function is to monitor the incoming electric current and the outgoing electric current in the building. if there is any imbalance detected by the GCFI it shuts out/interrupts the current flow in the building.

this interruption in the current flow is to protect the equipment, the house and the receptacles found in the building against possible overheating which might lead to fire outbreak in the building. also if the insulation of the cables used in the building is worn out it can also lead to the GCFI tripping current flow as well.

As the name states, during a ground-fault (when the current going out is significantly different than the current going in) the GCFI interupts the current. Usually by a switch of some sort. (Pushing the "test" button produces that click, and cuts off the current)