Sagot :
Answer:
rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. ... Rectification may serve in roles other than to generate direct current for use as a source of power.
Rectifiers are essential circuits for power supplies that convert an AC input voltage into a DC voltage supply that can be used to power electronic circuits.
and if there no rectifiers in transformers
no energy and if no energy
we will not use anything to charge phones, laptops etc.
hope its help