Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode D 1 in the circuit is \ \ \ \ mA . (Assume all diodes in the given circuit are identical)

Physics · Semiconductor and Electronic Devices

JEE Main 2026 — 28 January, Morning Shift — Question 30

Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode $\mathrm{D}_{1}$ in the circuit is $\_\_\_\_$ mA . (Assume all diodes in the given circuit are identical)

Option A:
20.15
Option B:
11.7
Option C:
17.6
Option D:
18.8
Correct

Answer: D

Step-by-step solution

$12-0.3 \times 10^{3} \mathrm{I}-0.7=0$ $\frac{11.3}{0.3 \times 10^{3}}=\mathrm{I}$ $37.66 \times 10^{-3} \mathrm{~A}=\mathrm{I}$ Current through diode $\mathrm{D}_{1}, \mathrm{I}_{1}=\mathrm{I} / 2$ $\mathrm{I}_{1}=18.83 \mathrm{~mA}$

Answer key and solution verified before publishing.

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Exam: JEE Main 2026
Paper: 28 January, Morning Shift
Subject: Physics
Chapter: Semiconductor and Electronic Devices
Topic: p-n Diode and its Applications