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 transformer?
- A metal equipment case is connected to a protective conductor.
- A resistor limits current through an LED.
- A power adapter steps alternating voltage down for equipment.
- A camera flash circuit briefly stores energy before releasing it.
Reveal answer and explanation
A power adapter steps alternating voltage down for equipment.
transformer is a device that changes ac voltage through electromagnetic induction. A power adapter steps alternating voltage down for equipment.