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Friday, 9 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedMediumData or graph

JEE Main 29 January 2024, Shift 1, Physics Q48

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

In the given circuit, the breakdown voltage of the Zener diode is 3.0 V. What is the value of IzI_z?

The figure, in words

Circuit: 10 V battery in series with a 1 kOhm resistor feeding node A; a Zener diode between A and B (current I_z marked in the Zener branch) in parallel with a 2 kOhm resistor between C and D; output terminals at C and D; B and D on the bottom wire.
  1. (1)3.33.3 mA
  2. (2)1010 mA
  3. (3)77 mA
  4. (4)5.55.5 mAOfficial answer

Official answer

Option 4

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 4× 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. 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

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 42 of the 174 JEE Main shifts held from 2017 to 2026.