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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedMediumCalculation

JEE Main 30 January 2024, Shift 1, Physics Q48

Question 48 of 90 in this shift, Physics question 18 of 30, Section A.

A 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 :

The figure, in words

Circuit: 20 V battery in series with a 200 ohm resistor and a 500 ohm resistor; a Zener diode connected across (in parallel with the 500 ohm branch) between the junction of the two resistors and the return wire.
  1. (1)0
  2. (2)20 mA
  3. (3)30 mAOfficial answer
  4. (4)50 mA

Official answer

Option 3

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Semiconductor Diodes
Idea tested
Zener Diode Regulation

Same idea in other shifts

Asked 15× in all
  1. 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
  2. 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
  3. 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
  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. 26 Jul 2022, Shift 1 · Q60In the circuit shown below, maximum zener diode current will be __________ mA.MediumNumerical valueHas a figure
  6. 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
  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. 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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.