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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedEasyDiagram reading

JEE Main 27 January 2024, Shift 1, Physics Q48

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

Which of the following circuits is reverse - biased ?

The figure, in words

Four circuit options, each a diode and a resistor in series between two potentials: (1) ground and -5 V; (2) +2 V and ground; (3) +2 V and -10 V with resistor R; (4) +2 V and +4 V. Diode arrow points left to right in each as drawn.
  1. (1)[figure: diode (arrow pointing right, from the grounded left end) in series with a resistor, other end of resistor at −5-5 V]
  2. (2)[figure: +2+2 V terminal, resistor, diode (arrow pointing right) to ground]
  3. (3)[figure: +2+2 V terminal to diode (arrow pointing right) to resistor R to −10-10 V]
  4. (4)[figure: +2+2 V terminal, diode (arrow pointing right), resistor, other end at +4+4 V]Official answer

Official answer

Option 4

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Semiconductor Diodes
Idea tested
Forward and Reverse Biasing

Same idea in other shifts

Asked 6× in all
  1. 4 Apr 2026, Shift 2 · Q45Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A diode under…MediumAssertion–reason
  2. 4 Apr 2024, Shift 2 · Q31Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode :EasyDiagram basedHas a figure
  3. 6 Apr 2023, Shift 2 · Q42Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Diffusion current in a…MediumAssertion–reason
  4. 10 Apr 2023, Shift 2 · Q43If each diode has a forward bias resistance of 25 Ω\Omega in the below circuit, which of the following options is correct:MediumDiagram basedHas a figure
  5. 28 Jun 2022, Shift 1 · Q47For using a multimeter to identify diode from electrical components, choose the correct statement out of the following about the diode :EasySingle correct

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.