How does the characteristic of a diode help in rectification? – NABTEB QUESTION

Diode is two terminal devices which conducts with zero resistance when forward biased, and appear as infinite resistance when reverse biased. In order word.

Diode conductors ( allow current to flow through ) when it is forward bias and does not conduct, when it is reverse bias. Meaning that current flows through diode in one direction and block it in the other direction. The characteristic enable it to rectify electronic signal that passes through it.