Question

Which is true regarding AC current? The electrons move back and forth. The +/- polarity is constant. It is common in portable devices. It can only produce low voltages.

Answer 1

A. The electrons move back and forth.
Hope this helped. :L

Answer 2

Answer: Option (a) is the correct answer.

Explanation:

AC current stands for alternating current. In an alternating current there is periodically reverse movement of current.

This means electrons move in one direction for a certain time and then they reverse their movement for the same time period and it continues in the back and forth position.

Thus, we can conclude that the statement electrons move back and forth is true regarding AC current.