What is the difference between AC and DC current?
A. AC current flows in one direction only while DC current changes direction periodically
B. AC current changes direction periodically while DC current flows in one direction only
C. AC current is used for high voltage circuits while DC current is used for low voltage circuits
D. AC current is more efficient than DC current
Answer:B
What is the difference between AC and DC current?
A. AC current flows in one direction only while DC current changes direction periodically B. AC current changes direction periodically while DC current flows in one direction only C. AC current is used for high voltage circuits while DC current is used for low voltage circuits D. AC current is more efficient than DC current