MCQ PracticeIn a mercury arc rectifier characteristic blue luminosity is due toSubject: Electrical EngineeringTopic: Rectifiers And ConvertersAcolour of mercuryBionizationChigh temperatureDelectron streamsCorrect 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