19. Rectifiers are used to convert: A.Direct current to Alternating current B.Alternating current to Direct current C.High voltage to low voltage D.Low voltage to high voltage
Answer: Option B Solution: A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current.
