Alternating current and direct current

1 mark · Easy

Which of these is a feature of an alternating current (a.c.) supply?

Show answer

Correct option: The current changes direction repeatedly.

Common mistakes: The current only flows in one direction.

Show mark scheme and worked solution

Marking points

B1 · 1 mark · Correctly selects the feature of a.c.

Worked solution

Alternating current (a.c.) is characterized by the current changing direction repeatedly.