MCQ PracticeDigital signals:Subject: Computer Science EngineeringTopic: Automation SystemAcan have three possible levelsBare assigned values of 1 or 0 depending on the voltage levelChave a sinusoidal shape.Dhave a frequency measured in units of hertz E. None of the aboveCorrect Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the