Question

Which one of the following statements is correct?

• A. AC changes its magnitude but not direction
• B. DC changes its magnitude and direction
• C. DC changes its direction only
• D. AC changes both its magnitude and direction

Hint:

Remember that AC periodically reverses direction and its magnitude can vary, while DC flows in a constant direction with a constant magnitude.

Answer 1

The Correct Option is D

Alternating current (AC) changes both its magnitude and direction periodically. In contrast, direct current (DC) maintains a constant magnitude but its direction can change depending on the external factors, such as polarity reversal.