A full wave rectifier circuit with diodes (D 1 ) and (D 2 ) is shown in the figure. If input supply voltage V in =220 sin (100 π t ) volt, then at t =15 msec

D 1 is reverse biased, D 2 is forward biased

D 1 is forward biased, D 2 is reverse biased

D 1 and D 2 both are forward biased

D 1 and D 2 both are reverse biased

Physics · Semiconductor and Electronic Devices

NEET (UG) 2025 — Question 37

A full wave rectifier circuit with diodes $\left(D_{1}\right)$ and $\left(D_{2}\right)$ is shown in the figure. If input supply voltage $\mathrm{V}_{\text {in }}=220 \sin (100 \pi \mathrm{t})$ volt, then at $\mathrm{t}=15 \mathrm{msec}$

Option A:
$D_{1}$ is forward biased, $D_{2}$ is reverse biased
Option B:
$D_{1}$ is reverse biased, $D_{2}$ is forward biased
Correct
Option C:
$D_{1}$ and $D_{2}$ both are forward biased
Option D:
$D_{1}$ and $D_{2}$ both are reverse biased

Answer: B

Step-by-step solution

At $\mathrm{t}=15 \mathrm{msec}$

$\mathrm{V}_{\text {in }}=220 \sin \left(100 \pi \times 15 \times 10^{-3}\right)$

$=220 \sin \left(\frac{3 \pi}{2}\right)=-220 \mathrm{~V}$

So diode $D_{1}$ is in reverse bias and $D_{2}$ is in forward bias

Answer key and solution verified before publishing.

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Exam: NEET (UG) 2025
Paper: 2025 paper
Subject: Physics
Chapter: Semiconductor and Electronic Devices
Topic: p-n Diode and its Applications

The output (Y) of the given logic implementation is similar to the output of an/a \ \ \ \ \ gate.

Answer: B

Step-by-step solution

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