Which of the following is not a general characteristic of ac wave?
A. The wave shape is identical for each cycle
B. The polarity reverses periodically
C. The electrons always flow in the same direction
D. There is a definite frequency
Answer:C
Which of the following is not a general characteristic of ac wave?
A. The wave shape is identical for each cycle B. The polarity reverses periodically C. The electrons always flow in the same direction D. There is a definite frequency