The purpose of the third prong on a common electric plug of an appliance is
A)to handle three-phase electricity.
B)to provide an alternate live wire.
C)to connect the appliance to zero ground potential.
D)a substitute for a safety fuse.
E)all of the above

Question

Quizplus · Accepted Answer

The third prong on a common electric plug of an appliance is usually a grounding or earthing wire, which connects the appliance to zero ground potential. This helps to protect the user from electrical shock in case of a fault or short circuit within the appliance. It does not handle three-phase electricity, provide an alternate live wire, or act as a substitute for a safety fuse. Therefore, the best choice is C.

The Purpose of the Third Prong on a Common Electric