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.
Alternating current differs from direct current because alternating current:
- Cannot deliver power
- Periodically reverses direction
- Has no voltage
- Flows only in batteries
Reveal answer and explanation
Periodically reverses direction
AC periodically changes direction; DC maintains one direction.