Electronics information · Difficulty 1
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which statement best describes ground?
- a protective device that melts and opens a circuit during excessive current
- a reference or low-resistance path used for safety and circuit return
- electric potential difference that can drive charge through a circuit
- opposition to electric current
Reveal answer and explanation
a reference or low-resistance path used for safety and circuit return
ground is a reference or low-resistance path used for safety and circuit return. A metal equipment case is connected to a protective conductor.