MCQ PracticeWhen a star becomes a singularity and has zero volume and infinite density, it is called_______________?Subject: Everyday ScienceTopic: Everyday ScienceAWhite dwarfBBlue giantCWolf-Raynet starDBlack holeAtmospheric ScienceCorrect Answer: DPractice 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