select the correct answer. which is true regarding ac current? a. the electrons move back and forth. b. the…

select the correct answer. which is true regarding ac current? a. the electrons move back and forth. b. the +/- polarity is constant. c. it is common in portable devices. d. it can only produce low voltages.

select the correct answer. which is true regarding ac current? a. the electrons move back and forth. b. the +/- polarity is constant. c. it is common in portable devices. d. it can only produce low voltages.

Answer

Answer:

A. The electrons move back and forth.

Brief Explanations:

In AC (alternating - current), the direction of electron flow changes periodically, meaning electrons move back and forth. The polarity of AC is not constant (contrary to option B), DC (direct - current) is more common in portable devices (not AC as in option C), and AC can produce a wide range of voltages, not just low ones (contrary to option D).