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Saturday, 31 October

JEE Main · Physics · Semiconductor Electronics: Materials, Devices and Simple Circuits

Ideal vs. Practical Diode Circuit Analysis

JEE Main asked Ideal vs. Practical Diode Circuit Analysis 12 times in 12 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023, 2024, 2025 and 2026. It belongs to Semiconductor Diodes, in Semiconductor Electronics: Materials, Devices and Simple Circuits (Physics). The longest wait between two years asking it was 1 year. In 2020, 2021 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
12
in 12 shifts
Years
7 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023, 2024, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.150.30’170.25’200.10’210.07’220.07’230.05’240.13’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 3 in 12 shifts · 2021: 3 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 in 12 shifts · 2024: 1 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20251 of 8
  • 20241 of 18
  • 20231 of 12
  • 20222 of 24
  • 20213 of 24
  • 20203 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: multi-step.

  • Time constant of rc circuit with diodes
  • Output voltage of ideal diode circuit

Difficulty

Easy 1Medium 11Hard 0

5 of the 12 questions had a numerical answer.

Every question

All 12 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 4 Apr 2026, Shift 1 · Q42Consider a circuit consisting of a capacitor (20 μ20\ \muF), resistor (100 Ω100\ \Omega) and two identical diodes as shown in figure. The…MediumDiagram basedHas a figure
  2. 8 Apr 2025, Shift 2 · Q45The output voltage in the following circuit is (Consider ideal diode case)MediumDiagram basedHas a figure
  3. 4 Apr 2024, Shift 1 · Q48The value of net resistance of the network as shown in the given figure is :MediumDiagram basedHas a figure
  4. 15 Apr 2023, Shift 1 · Q43In the given circuit, the current (I) through the battery will beMediumDiagram basedHas a figure
  5. 27 Jun 2022, Shift 2 · Q60The cut-off voltage of the diodes (shown in figure) in forward bias is 0.6 V. The current through the resister of 40 Ω\Omega is ________…MediumNumerical valueHas a figure
  6. 25 Jul 2022, Shift 2 · Q56Two ideal diodes are connected in the network as shown is figure. The equivalent resistance between A and B is _______ Ω\Omega .MediumNumerical valueHas a figure
  7. 26 Feb 2021, Shift 1 · Q28The circuit contains two diodes each with a forward resistance of 50 Ω\Omega and with infinite reverse resistance. If the battery voltage…MediumNumerical valueHas a figure
  8. 25 Feb 2021, Shift 1 · Q7A 5 V battery is connected across the points X and Y. Assume D1D_1 and D2D_2 to be normal silicon diodes. Find the current supplied by the…MediumDiagram basedHas a figure
  9. 27 Aug 2021, Shift 1 · Q21A circuit is arranged as shown in figure. The output voltage Vo\mathrm{V_o} is equal to __________ V.MediumNumerical valueHas a figure
  10. 3 Sep 2020, Shift 1 · Q20When a diode is forward biased, it has a voltage drop of 0.5 V. The safe limit of current through the diode is 10 mA. If a battery of emf…EasySingle correct
  11. 9 Jan 2020, Shift 2 · Q20The current ii in the network is :MediumSingle correctHas a figure
  12. 9 Jan 2020, Shift 1 · Q25Both the diodes used in the circuit shown are assumed to be ideal and have negligible resistance when these are forward biased. Built in…MediumNumerical valueHas a figure

Shifts: 9 Jan 2020, Shift 2, 9 Jan 2020, Shift 1, 3 Sep 2020, Shift 1, 25 Feb 2021, Shift 1, 26 Feb 2021, Shift 1, 27 Aug 2021, Shift 1, 27 Jun 2022, Shift 2, 25 Jul 2022, Shift 2, 15 Apr 2023, Shift 1, 4 Apr 2024, Shift 1, 8 Apr 2025, Shift 2, 4 Apr 2026, Shift 1.

Same topic

Other ideas in Semiconductor Diodes

Semiconductor Diodes has 17 ideas JEE Main has asked; 10 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas