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 transformer?
- a device that changes AC voltage through electromagnetic induction
- a component that stores separated electric charge
- a reference or low-resistance path used for safety and circuit return
- opposition to electric current
Reveal answer and explanation
a device that changes AC voltage through electromagnetic induction
transformer is a device that changes ac voltage through electromagnetic induction. A power adapter steps alternating voltage down for equipment.