Electronics information · Difficulty 3
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 situation is the best example of ground?
- A battery provides potential difference across a lamp.
- A resistor limits current through an LED.
- An overload causes a thin metal element to break the circuit.
- A metal equipment case is connected to a protective conductor.
Reveal answer and explanation
A metal equipment case is connected to a protective conductor.
ground is a reference or low-resistance path used for safety and circuit return. A metal equipment case is connected to a protective conductor.