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

Zener Diode Regulation

JEE Main asked Zener Diode Regulation 15 times in 15 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2024 and 2025. It belongs to Semiconductor Diodes, in Semiconductor Electronics: Materials, Devices and Simple Circuits (Physics). The longest wait between two years asking it was 2 years. In 2020, 2021, 2022, 2024 and 2025 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
15
in 15 shifts
Years
5 of 8
First asked
2020
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

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

00.150.30’170.17’200.14’210.14’220’230.14’240.25’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 4 in 24 shifts · 2022: 4 in 24 shifts · 2023: 0 in 12 shifts · 2024: 3 in 18 shifts · 2025: 2 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

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

  • 20260 of 9
  • 20252 of 8
  • 20243 of 18
  • 20230 of 12
  • 20224 of 24
  • 20214 of 24
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Ammeter reading in zener circuit
  • Zener regulator load current and resistance

Difficulty

Easy 1Medium 14Hard 0

10 of the 15 questions had a numerical answer.

Every question

All 15 questions

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

  1. 7 Apr 2025, Shift 1 · Q45In the following circuit, the reading of the ammeter will be (Take Zener breakdown voltage = 4 V)MediumDiagram basedHas a figure
  2. 2 Apr 2025, Shift 1 · Q45A zener diode with 5 V zener voltage is used to regulate an unregulated dc voltage input of 25 V. For a 400 Ω400\ \Omega resistor connected…MediumSingle correct
  3. 30 Jan 2024, Shift 1 · Q48A Zener diode of breakdown voltage 10 V is used as a voltage regulator as shown in the figure. The current through the Zener diode is :MediumDiagram basedHas a figure
  4. 29 Jan 2024, Shift 1 · Q48In the given circuit, the breakdown voltage of the Zener diode is 3.0 V. What is the value of IzI_z?MediumDiagram basedHas a figure
  5. 8 Apr 2024, Shift 2 · Q60A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of…MediumNumerical valueHas a figure
  6. 28 Jun 2022, Shift 2 · Q52A zener of breakdown voltage VZ_Z=8 V and maximum zener current, IZM_{ZM}=10 mA is subjected to an input voltage Vi_i=10 V with series…MediumNumerical valueHas a figure
  7. 24 Jun 2022, Shift 2 · Q55In the given circuit, the value of current ILI_L will be ________ mA. (When RLR_L = 1kΩ\Omega)MediumNumerical valueHas a figure
  8. 29 Jul 2022, Shift 2 · Q58A 8 V Zener diode along with a series resistance R is connected across a 20 V supply (as shown in the figure). If the maximum Zener…MediumNumerical valueHas a figure
  9. 26 Jul 2022, Shift 1 · Q60In the circuit shown below, maximum zener diode current will be __________ mA.MediumNumerical valueHas a figure
  10. 22 Jul 2021, Shift 2 · Q28In a given circuit diagram, a 5 V zener diode along with a series resistance is connected across a 50 V power supply. The minimum value of…MediumNumerical valueHas a figure
  11. 26 Feb 2021, Shift 2 · Q21The zener diode has a VzV_z = 30 V. The current passing through the diode for the following circuit is ________ mA.EasyNumerical valueHas a figure
  12. 24 Feb 2021, Shift 1 · Q28In connection with the circuit drawn below, the value of current flowing through 2 kΩ\Omega resistor is __________ ×10−4\times10^{-4} A.MediumNumerical valueHas a figure
  13. 26 Aug 2021, Shift 2 · Q22For the given circuit, the power across zener diode is __________ mW.MediumNumerical valueHas a figure
  14. 4 Sep 2020, Shift 1 · Q19Take the breakdown voltage of the zener diode used in the given circuit as 6V. For the input voltage shown in figure below, the time…MediumDiagram basedHas a figure
  15. 9 Jan 2020, Shift 2 · Q25The circuit shown below is working as a 8 V dc regulated voltage source. When 12 V is used as input, the power dissipated (in mW) in each…MediumNumerical valueHas a figure

Shifts: 9 Jan 2020, Shift 2, 4 Sep 2020, Shift 1, 24 Feb 2021, Shift 1, 26 Feb 2021, Shift 2, 22 Jul 2021, Shift 2, 26 Aug 2021, Shift 2, 24 Jun 2022, Shift 2, 28 Jun 2022, Shift 2, 26 Jul 2022, Shift 1, 29 Jul 2022, Shift 2, 29 Jan 2024, Shift 1, 30 Jan 2024, Shift 1, 8 Apr 2024, Shift 2, 2 Apr 2025, Shift 1, 7 Apr 2025, 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