Select the correct statement explaining the function of Rectifier.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → It converts AC Signal to unidirectional pulsating signal
A rectifier uses the one-way conduction of a p-n junction diode: the diode conducts only when it is forward biased. So an alternating input produces an output that flows in one direction only but still rises and falls, a unidirectional pulsating voltage.
NCERT (2026-27):
Application of Junction Diode as a Rectifier – “From the V-I characteristic of a junction diode we see that it allows current to pass only when it is forward biased. … This property is used to rectify alternating voltages and the circuit used for this purpose is called a rectifier.”
Application of Junction Diode as a Rectifier – “… Thus, the output voltage, though still varying, is restricted to only one direction and is said to be rectified.”