Home » Alternating Current » 4 » d The current in an AC circuit completes a cycle in 0.1 second. So the frequency is: a. 1 Hz b. 10 Hz c. 100 Hz d. Your answer "d" is not correct. "b" is the right answer. The frequency is the reciprocal of the period. 1 / 0.1 = 10 Hz. Next |